Showing posts with label Biology. Show all posts
Showing posts with label Biology. Show all posts

Monday, April 25, 2011

Red-breasted Sapsuckers---drilling and waiting for dinner

Woodpeckers have always been the most interesting species of bird to me. Ever since growing up on a large Oregon family farm in the Willamette Valley I remember the excitement in seeing them in the forest around our lake, or seeing Pileated woodpeckers in our apple orchard. Locally here in the Snoqualmie Valley we are blessed with no fewer than five species of woodpeckers in the surrounding open mixed forests. One which leads a more quiet life happens to be nearly my favorite---the red-breasted sapsucker.
These beautiful birds have red heads and breasts and can be confused for no other species of woodpecker in our region (the red-headed woodpecker is an eastern US species). They also have virtually no noticeable differences in appearance between the male and female (very unlike the common hairy and downy woodpeckers that are common around here). Dense mixed and conifer forests typical of western Washington are a favorite home for them---sounds a lot like our surrounds here indeed! They get their name “sapsucker” from the foraging behavior which they follow. This consists of drilling orderly horizontal rows of holes into tree trunks and then returning to those holes later to feed on the running sap and the insects attracted to it. Very different than most woodpeckers, they forage in healthy trees and it is actually possible to kill a young tree if they drill too many sap-holes around its trunk. This, however, is quite uncommon and shouldn’t be something to worry about. Most if not all western red cedar trees that you see in a healthy forest will have thousands of these holes ringing the trees! You won’t find them dying anytime too soon from it either. Even a small flowering cherry tree in our immediate yard has become a favorite drilling/foraging zone for a resident bird on our property. This tree sap is the main food of red-breasted sapsuckers. They also eat some insects and fruit. They will enjoy more insects during the nesting season and they primarily will feed insects to their young.


These busy birds are very resident neighbors and don’t move around much nor migrate. They are common in the lowlands of Western Washington even in winter. However, if the weather turns cold enough for sap to freeze, they may move out to the outer coast to find food.
Lastly, they are considered a “keystone” species. This is significant because it means that many other species use the sap wells they drill. So the next time you hear a polite hidden “tapping” sound going on and on in a cedar tree nearby take the time to look more closely. You might find one happily showing you that your home is a healthy part of the ecosystem as well!

Tuesday, April 19, 2011

Northern Alligator Lizard: We have lizards in Western Washington? You’re kidding, right?

I so clearly remember the afternoon about 20 years ago, working in my yard. I was rummaging around some old rotting logs that were mixed in under a thick growth of salal when suddenly something quickly moved and stopped. I immediately of course assume “oh, yet another garter snake”. But then I looked more closely: what WAS this thing!? I was thinking “salamander” but no, it sure wasn’t that either. After getting photographs developed (yes, this was WAY back in ancient times of only shooting with film!) I finally figured out that we have lizards around our neck of the woods! Yes, the Northern Alligator Lizard is a remarkable reptile that is fairly common but usually hidden from view.
The Northern Alligator Lizard ranges up to 13 inches in length. However all of the specimens I’ve witnessed over the past 20 years have been in the 7-8 inch range. This alligator lizard species prefers our cool shady forests. They range from the southern portions of British Columbia down through the Pacific Northwest. One thing that makes the Northern species stand out from others is that they give birth to live young. The Southern Alligator Lizard and most others lay eggs. Northern Alligator Lizards are found in cooler and wetter environments than most any other species of lizard. They are often found in forest clearings or edges, under logs and other surface debris. They can also be found in talus slopes that are associated with forests. And what an amazing banquet of foods they eat. They feed on a wide range of little critters such as insects, ticks, spiders, millipedes, and snails. Thus I’m a very huge fan of these amazing creatures if they eat ticks---one of the few things on this earth that I completely detest!
Able to reproduce each year, they have anywhere from one to eight young. I was surprised to learn that they have a life expectancy of up to eight years. You may not have ever seen them before, but it isn’t likely due to your not paying attention. They make extensive use of cover such as rocks, logs, and shrubs. But they don’t go far either. Most individuals are site faithful, remaining in the same area (within a 100 foot radius) for three consecutive years. I was greatly humored over one last fact about them which was news to me: lizards with shorter tails have slower sprint speeds. I’m still trying to find out more detailed information to know WHY this is the case, but it was fascinating nonetheless.
So get outside this summer and kick some rocks and logs around a bit. Snoop around in some dark corners of your property if you border forested areas. You just might be able to startle yourselves and see these hidden creatures of our unknown world! But if you so choose to please handle them very carefully, if at all. Alligator lizards have a tail that easily breaks off and they also have strong enough jaws to give a serious bite!

Sunday, October 17, 2010

Return of the Bald Eagles



The holiday season has once again almost returned, bringing with it our annual season of joy, sharing, and hopeful happiness (What? Is it really November already!?). But while we all are busy with our holiday preparations, another visitor once again silently prepares to return to our neighborhood. This wintering natural neighbor is none other than our spectacular Bald Eagle as they typically make their annual winter visit from November through early March (some yearlong residents do live and nest locally as well, but many are only winter visitors).

Local winter populations of eagles do not compare to those present at river areas to the north, such as the Skagit, Sauk, and Stillaguamish Rivers. However, we do have many local hotspots, which often provide excellent viewing opportunities. In the heart of Fall City you can often spot these huge birds in the towering cottonwood trees near the confluence of the Raging and Snoqualmie Rivers. I’ve seen as many as four at once just across the river from town! They fish the Raging River often and I’m always keeping an eye open along the Preston-Fall City Road at each bend in the river. If you fail to see any in these locations, roam up to Borst Lake along Mill Pond Road out of Snoqualmie, or take the West Snoqualmie Valley Road to Carnation. Areas north of Carnation near Sikes Lake and along the river near Carnation Farm Road all offer excellent opportunities to see these magnificent birds!

The lives of Bald Eagles are fascinating, and one of the most amazing things about them to me is their nesting practice. Bald Eagles build the largest nests in the world that are made by a single pair of birds. Some nests weigh over a thousand pounds and the largest nests have been known to be up to 12 feet deep! They lay on average only two eggs in the nest and only 10% of all newborns will survive until adulthood. Adulthood is reached at age five when they finally develop the spectacular white heads we all recognize so quickly. What is so interesting to me is that their nests, once established, are used perennially by mating pairs of birds, and have been known to be used for up to 35 years!

Each eagle sighting I have becomes a memory that lingers with me for a long time. Whether it is a pair of them circling over the Snoqualmie River or a single bird perched in a large cottonwood tree, it keeps a smile in my mind for days. So keep your eyes open wherever you go around the valley this winter. You never know when you might spot our flying national symbol!

Wednesday, June 2, 2010

Dip, Dip, Dip! American Dippers know how to jig!

You might enjoy the beauty of moss covered boulders, the towering forest canopy, or the sound of the babbling water when you stroll along a refreshing creek or river nearby. Stop, look, and listen. Isn’t it beautiful sight and sound? But suddenly you see movement of a small gray flying object and hear peeping noises zoom up the creek to break your train of thought. The movement stops on a rock, and then the show can begin. You’re ready to watch the unique antics of an American dipper!

The American dippers also are often called “water ouzels” by many people. These smallish songbirds (yes, they do have a very pretty call!) are about seven inches long and have a very short tail. They are an even gray colored bird and their names come from the behavior seen when they are closely approached or maybe disturbed by another creature. This “dipping” is the act of them quickly bending their legs so that their entire body quickly moves up and down. But I feel that the best part of their show comes when they are feeding. They are very well adapted to dive underwater---and good thing since their main source of food is aquatic insects! They aren’t like ducks as they don’t have webbed feet. However they can swim across water by paddling their feet and they can propel under the water with a “swimming-style” of motion of their wings. The really cool thing in their biology is how they have nasal flaps which keep water from entering their noses. I wish I could do that! Once their heads are underwater they simply go about their business of eating the buffet of insect larvae (mayflies, stoneflies, etc…) that await them. While they have predators such as sharp-shinned hawks and weasels, their nests are much protected from them. Nest locations are normally within the spray of the water and often are hidden back in behind a small waterfall or large rapid. It is a thrill seeing one dart into a waterfall and not come back out! They often re-use the same nest year to year and they are very territorial. It has been seen where a dipper will defend over half mile of stream.

While it is easy to think of these creatures as mountain dwellers in the vast network of creeks and rivers of the Cascades, they actually are happy in lowland areas as well. I’ve seen them at the confluence of the three forks of the Snoqualmie River above the falls. It is typical to locate them in places such as Tokul Creek and the Raging River. I’ve even seen them in an area surrounded by development as they thrive along Coal Creek below Coal Creek Falls in Cougar Mountain Regional Park. Healthy streams are necessary for them to survive. Without them, the insects they depend on will not flourish. So enjoy your opportunities to locate this special bird species---they will give you a free show and also let you know the healthy state of the water is worth cheering for as well!

Friday, May 7, 2010

Boring Beetles aren't so boring: The Banded Alder Borer

Beetles aren't necessarily the most exciting critter to many people. In fact they can give some people the absolute creeps! But some play a positive role in nature and are downright beautiful. Mention the phrase "borer beetles" and usually the reaction isn’t going to be a positive one. Most species of this “long-horned borer” beetle family can cause extensive damage to nature as they bore into live wood. Some of you may recall hearing about the dangerous imported Asian Long-horned Beetle, which devastated mature trees in several Eastern US cities during 1999 and 2000. This caused thousands of trees to be destroyed in Chicago and New York in particular! Harmful boring beetles will attack forest trees including maple, poplar, and alder. They kill the trees by boring large holes through the heartwood of the tree. This in turn causes serious damage to the live tree. Most of these long-horned beetle species which are harmful to trees have the long antennae and long bodies which are characteristic of this family. However, we are fortunate to have a native beetle to our area in this family which actually is beneficial to nature! Introducing: the Banded Alder Borer.
The Banded Alder Borer is very striking as it is 1-1.5 inches long with large black and white striped ("banded") antennae and black and white markings on the body. The antennae are longer than the body! It feeds on alder, ash and other hardwood trees. However, it feeds on the dead or decaying wood of these trees. This in turn is helping with the promotion of the decay of the dead wood in the ecosystem. They lay their eggs on the surface of the tree bark. As the larvae develop they then tunnel inward and later prepare pupal chambers which will be home until the beetle is "born" to life.
Typically you will only see single individuals of them during the summer. Occasionally, however, they are strangely attracted in groups to fresh paint on the sides of buildings during warm/hot weather! Speculation is that a volatile chemical in paint can mimic a certain attracting scent ("pheromone") which draws the beetles to each other. Some painters have returned from a lunch break only to find a number of them unfortunately dead in their open cans of paint. The Banded Alder Borer is the only known beetle that seems to display this potential attraction to freshly painted areas.
Don't expect to come across these lovely beetles very often as they actually are quite uncommon to see. But if you should be lucky enough to see one take a moment to get close and watch it. They do not bite and are not a pest in any way---there is no need for taking any actions to control them!

Wednesday, April 14, 2010

What a beak...the Evening Grosbeak

Here we have a rather uncommon bird that many of you may not have experienced yet. But one thing is almost for certain: if you see one, you will see many more! Moving around often in large flocks, the evening grosbeak (Coccothraustes vespertinus) can fill your surrounding trees with a loud chorus and also drain your large birdfeeders of sunflower seeds in a hurry.
About 140 years ago, English-speaking settlers in the foothills of the Rocky Mountains came across a beautiful big-beaked bird that appeared mysteriously from somewhere in the distant west. They named it evening grosbeak in the mistaken belief that it came out of the woods to sing only after sundown. The species today has expanded its range---prior to 1890, they were unknown east of the Great Lakes, whereas today they continue to expand their breeding range throughout the East. Thus not until recent times (historically speaking) have they even been known to exist to white settlers. The modern day abundance of sunflower seeds at feeding stations is one of the keys to its range expansion as the seeds available have extended the chances of them being able to survive the winters in areas their native wintering seeds (primarily seeds from the cones of spruce, balsam fir, and pine trees) never existed!

The evening grosbeak is considered a very common bird…if you are lucky enough to have them around. However, they are very spotty in their distribution and while one area might be overwhelmed with dozens of them the next areas will not have a single specimen. They are an erratic migrant in winter as the occurrence of their flocks is unpredictable. They are large, gregarious, nomadic finches that travel in raucous flocks. During the winter, evening grosbeaks are irregularly common, sometimes appearing in large flocks at feeders where they can devour huge amounts of sunflower seeds. I can’t describe the amazing sense you experience when getting the opportunity to stand outside and listen to a flock of 30 or 40 of them all chirping! The chorus of chatter they create is absolutely lovely!
A fascinating feature about this bird is of course its beak. The evening grosbeak's bill is bone color during winter, but it undergoes a dramatic change in pigmentation in early spring. Its new color matches precisely the green of fresh deciduous buds and leaves and also the new needles that will tip the spruce boughs around the site where the bird's nest will be built a few weeks thereafter. The evening grosbeak conceals its body in the trees and in order to see lifts only its head and bill, which looks like a young green spruce or balsam cone. This is a terrific example of protection through appropriate coloration!

Certainly no farmer will wish to take away from them the weed seeds they devour. A grosbeak getting all its daily energy from budworm larvae would eat 1000 a day. These birds crowd into budworm infested areas to breed and raise young, then move elsewhere when the infestation declines. Because of its appetite for this destructive pest, the evening grosbeak is one of our most beneficial birds! So while they are not as common as our summer visitors, the black-headed grosbeaks, they certainly are a joy to experience if you are so lucky to have them at your feeders during their times passing here in the area!

Friday, March 5, 2010

Chorus of Spring - Pacific Tree Frogs

While we have had some great late winter weather lately spring still isn't quite here. But March is a magical month of life in nature. Plants begin to grow and our daylight hours are filled with the songs of birds. Another choir of spring also starts to warm up, but this one is at night! Ah, one of my favorite parts of spring. The longer evening hours of warmth lead to that first night where darkness brings on a riot of singing from our hidden but noisy neighbors: the Pacific Tree Frogs!
The Pacific Tree Frog (Hyla regilla) can be found almost anywhere in our region. Woodlands, meadows, pastures, shrubs, small trees, flower gardens, and smack in the middle of your lawn! They often are found even in urban areas quite far from the nearest body of water! Their toes have sticky pads which allow them to climb about on plants with great agility. However they do tend to stay much closer to ground level than most tree frog species, preferring to remain within two feet of the ground most of the time. I have always been fascinated with the care these little creatures use in selecting areas to lay their eggs. The eggs are laid in early March to May in temporary ponds. Why? These temporary ponds are key because their predators such as brown salamanders and bullfrogs do not live or lay their eggs here! These other species require permanent water for their livelihood! By choosing temporary ponds (which will dry up by summer) instead of deep permanent ponds, Pacific Tree Frogs reduce the number of predators that may eat the tadpoles!

So just why do frogs sing? There are actually a wide variety of reasons! Sometimes, frogs sing when they are trying to attract a mate ("Hey there! Come and find ME!"). Sometimes, they sing to mark their territory ("Excuse me, this is MY lily pad!"). Other times, frogs sing because they know the weather is going to change or they even squeak when they are frightened or hurt! But at this time of year what stands out the most is the males call for attracting females. The male frogs are territorial and protect their part of the pond from other males by repeating their two-toned call at night. This call can be heard from as far as a mile or more away and attracts females who hop along to find where the males are hanging out. This loud call is so famous and "perfect" in a sense that even Hollywood has taken notice. The distinctive call of the Pacific Tree Frog is widely used in films for a "tropical" background! Once the eggs have been laid in the temporary pond (attached to a branch or clump of grass) the parents hop back to open forests and other places, leaving the young to fend for themselves. Thus begins the remarkable transformation of an egg to a tadpole and eventually to the young froglet which first grows back legs, then front legs, and then loses the trail to become a froglet. This happens by autumn and young frogs are mature at about one year of age. At that point their main predators are raccoons, herons, mink, bullfrogs, snakes, and other animals.
As March passes along and we get our first warm evenings that last well past dinnertime start keeping an ear open for this spring choir to kick into full swing! While it can be very difficult to spot these little fellows (they cease calling if they feel threatened) you can always sit back and enjoy knowing they are present nearby. Having Pacific Tree Frogs (or any species of frog for that matter) nearby is one of the strongest indications that we have a healthy ecosystem! These little amphibians are one of the first indicators of when an ecosystem is starting to struggle under pressure and we need to keep them happy if the rest of the natural cycle around us is to remain healthy and happy too!

Wednesday, August 26, 2009

The Whistling Pigs of Summer

There are some fun critters that live around us that lead what appear to be pretty good lives. Chipmunks seem to just have fun scurrying about all day zipping in and out of the rocks. Otters never seem to have to take life seriously! But how can you beat the life of marmots? They roam around during the day ever so slowly eating the lush vegetation. When they tire of that, it's time to nap on a sunny rock. Then they eat some more and to finish off autumn they head underground for a seven month snooze far underneath the snow!
The Pacific Northwest is filled with prime habitat supporting large marmot populations. In fact the best areas for viewing marmots are in Washington State! The Paradise and Sunrise areas in Mount Rainier National Park are typically thick with Hoary Marmot activity. Their close cousin the Olympic Marmot can easily be viewed around Hurricane Ridge in Olympic National Park. Yet a third species of marmot, the Yellow-bellied Marmot, lives throughout Eastern Washington! I have seen many of them at Palouse Falls State Park as well as the hills between Ellensburg and Cle Elum. It is worth noting that the Yellow-bellied Marmot is a host for the tick that carries Rocky Mountain spotted fever.

Many people think that all marmots live in colonies, but this is only typically true if there is a large food source available for all of them. More often they need to disperse over a larger range and thus live more isolated with their mate. In this case the increased range means the male will not be able to guard more than one female and feed himself at the same time. They feed on the lush green vegetation of the alpine meadows (or shrub steppe in the case of the Yellow-bellied Marmot) extensively. They will often perform an entertaining form of "playful" wrestling when one feels another is moving in on their own personal stash of food! They won't hurt one another however, as a simple call from one will end the match.
All marmots have many vocalizations. A common call is the alarm call which is given anytime anything comes near a burrow. This typically would be a natural predator such as a coyote, fox, eagle, or even people in areas where marmots are not accustomed to seeing them. The alarm call is a high-pitched shrill whistle. Marmots who hear them respond by immediately looking around and returning to their burrows if they are not already at one!
I fondly remember my first encounter with a marmot in Moraine Park on the north side of Mount Rainier National Park. Visibility wasn’t more than 100 feet in the thick fog. As I hiked up through the avalanche lily filled meadows of the area a sudden loud shrill broke the peaceful silence. There through the fog I spotted a lone huge marmot standing tall and showing me why they have the nickname “Whistler”. At the same time I then saw at least five other marmots scurrying rapidly to hide under the rocks!

I’m always eager to roam high alpine meadows this summer to watch the antics of these wonderful creatures…the “Whistling Pigs of Summer”!

Sunday, August 16, 2009

More from the heron world - visiting a Green Heron

I have always been amazed at the life of the great blue heron. In fact, I almost seem to take it for granted as I see them virtually every time I head out in the valley. However I finally chanced upon seeing a new member of the heron family that is much more difficult to locate, but they still are out there. At last, I saw my first Green Heron locally recently, and what a lovely sight it was! Always thinking “heron” means “big bird” can be confusing here, as these are the smallest of the heron family (well, Least Bitterns are a member of the heron family as well and slightly smaller normally). They are usually only 16-20” in length.
The Green Heron lives in typical swamp land, marshes, river banks, and other similar areas of the valley where you might see the normal reeds/marsh grasses/cattails of an environment. It is a quite solitary bird, normally feeding alone or possibly in a pair with its mate. It normally is very difficult to locate and notice as it will stand motionless while stalking its lunch. Indeed, normally it is first noticed when it suddenly flushed unexpectedly with a loud squawking call which is what happened to me! They prey on a wide assortment of things ranging from small fish, frogs, even insects. This diversity allows them more flexibility to breed on ponds inland further which are much smaller than those needed by other herons. The one I saw was utilizing a small swampland area not more than 50’ in diameter!
I can see how they could be confused with the Black-crowned Night Heron since it does have a rather dark black crown on its head. However the dark green/blue wings and a colored chest are far different than the white chest of the night heron. The Green Heron is fascinating to me as it is one of a very few critters in our bird world which is known as a “tool-using” bird. By this, it utilizes using “bait” such as crumbs, insects, worms, then drops them on the water’s surface and then proceed to nab the small fish which is attracted to the “bait” on the water. Amazing! Things like this solidify even more my pure joy in a lifelong passion to learn about our natural world and the biology behind it. Keep letting me know what you are seeing out there as we head into the autumn season soon! Every day might be a surprise waiting to happen!

Monday, May 18, 2009

Nice annual visits from the bird world

I've always enjoyed watching how the world of birds changes as we move into the warmer spring months (finally!). First off well back in April the Turkey Vultures came back for their annual summer stay in the area. Then I started seeing the Varied Thrushes slowly start to disappear as they headed back to the forested elevations a bit further away from the lowest valley areas. Suddenly Black-headed Grosbeaks showed up. Then one of the more fascinating large birds made their annual visit and still are hanging around here at our place, the Band-tailed Pigeons.
Unlike the tame pigeons found in city parks, our native Band-tailed Pigeon is a very shy bird and will avoid human contact wherever possible. They can roam alone but most often move in flocks of up to 50 birds! I always am in awe of the sight of 8, 12, or even sometimes 20 individuals booming off from our trees or feeders at the first sign of our presence. Their wings bang together to form a loud chorus of 'clapping' as they launch to the sky. They are very nomadic creatures as they move frequently in search of food. They typically will move over 20 miles daily and once they have found a persistent food source they will hit it hard and stick around. With seeds being one of their preferred foods (along with nuts, berries, and a few insects) this is an obvious story to follow once they have declared our sunflower feeding stations as a good food source. Mid-morning a single bird will come in...then a few more...and more...and suddenly we have 15-18 of them knocking each other off the feeders and the party is underway! Any quick motion on our part and poof: they are gone. But they have been known to empty a 12 lb stockpile of seeds over the course of two feeding visits during a single day!
While this habit of feeding can be hard on the birdseed budget, these birds are a special sight to have present. The purplish-grey upper body and head is almost an unreal color! This color combined with their yellow bill and legs is striking and adults have a thin white band on the back of the neck. And as its name implies, the Band-tailed Pigeon has a black band across its tail feathers. They also have many rather uncommon traits within the bird world. Only a single white egg is laid each year and only in very rare cases will there be two. One trick that I find fascinating about them is that unlike most birds, including other pigeon species, the Band-tailed pigeon is able to drink water without raising its head. It took me many years of observing them before I noted this!
Now, just yesterday we noted a visit by a stunning male Western Tanager, with its bright yellow body and orange head clearly one of the most beautiful song birds that might occasionally pass by on the west side of the Cascades! What will pay a visit next? I’ll keep my eyes open and I hope you do also – share what might be going on out there!
(photo: Band-tailed Pigeon resting on the bent branch of a western red cedar tree)

Tuesday, May 5, 2009

Listening For Coyote

I have a love for clear calm nights. As the night slows down and humans turn their attention to indoor activities, nature’s choir is just getting warmed up. Suddenly one piercing yelp cry leads to at least a half dozen more: the nighttime social life of the coyote has begun!

The coyote is a member of the dog family. In size and shape the coyote is like a medium-sized collie dog. However its tail is round and bushy and is carried straight out below the level of its back. They are one of the few wild animals whose vocalizations are commonly heard. At night coyotes both howl (a high quavering cry) and emit a series of short, high-pitched yips. Howls are used to keep in touch with other coyotes in the area (“I am here and this is my area!”). Sometimes, when it is first heard, the listener may experience a tingling fear of danger. But to those seasoned to the outdoors the howl of the coyote is truly “a song of the West”.

Coyotes typically dig their own dens and on average give birth to six pups in early spring. At this time food is abundant also which makes the timing of this event critical. The pups will live and play in the den for 6-10 weeks before beginning to venture out to hunt with Mom as a group. The family gradually disbands and by fall pups are hunting on their own and venturing away forming their own territory within a year of birth. Small mammals such as squirrels and rabbits make up a bulk of their diet but they also will diet on mice, insects, fruit and carrion, and even reptiles! Biologists now feel that only 10-14% of their diet comes from livestock such as poultry or young/sick sheep, etc…. Obviously great controversy exists over this very aspect of their being: are they really vicious killers or simply opportunistic hunters?

Coyotes are one of the most adaptable animals in the world. They have long been one of the most controversial of all non-game animals. Agricultural interests have urged its control by whatever means necessary so that actual and potential livestock losses may be eliminated. Environmentalists firmly believe that they are necessary to preserve the balance of nature. Actually the nearly successful attempt to exterminate the gray wolf (the coyote’s primary predator!) has been largely responsible for the coyote’s great expansion across the continent! Biologists do agree that individual animals preying on livestock and poultry should be destroyed. But they also agree that the species as a whole is not necessarily harmful, because much of its diet is made up of destructive rodents. Biologists also agree that coyote populations have no lasting effects on other wildlife populations. So the controversy rages on.

The adaptability of this cleaver creature brings humans into play as well. They can quickly learn to associate us as a food source and have been known to beg for food from people! The most important thing you can do is at no time ever leave any pet food outdoors, especially overnight. Equally as critical is to realize that they love nothing more than cats and often will take small dogs. Be responsible and keep your small pets indoors and don’t attract the coyote to your domain in the first place by leaving pet food outdoors. This alone will greatly aid in keeping the likelihood of a confrontation to a minimum and allow us all to co-exist and enjoy our signing neighbors! Listen for them this spring…they have a lot to say.

Monday, April 27, 2009

Western Trillium's annual kick off to spring

Many things mark the arrival of spring in our beautiful state. Some are not so thrilling to deal with - ticks and mosquitoes are already out with abundance at many locations in the state. But one thing that excites many of us is the “official” start to spring when the wildflowers of the lowlands begin their annual show. Over the past couple of weeks now one of the most beautiful wildflowers of our area has stirred to life: the western trillium!
While other wildflowers bloom earlier (such as skunk cabbage and palmate coltsfoot) the western trillium (Trillium ovatum) is close behind. It also is common to see it going by the name “western wake-robin” since it is one of the earlier species to bloom. I know many people who feel that spring really is here once they see their first one blooming along a local trail or on their property! We are very fortunate to have numerous places on our property where they grow much to our enjoyment. However, if you are not this lucky there are many close-by locations you are sure to see them now. Walk the Snoqualmie Valley Trail and they will be emerging along the moist hillsides and streams that you find in the semi-shaded regions. Most trails within the Tiger Mountain State Forest as well as the easy stroll to Twin Falls out east of North Bend all offer prime viewing. Likewise, they often are seen in large quantities on most semi-shaded moist slope along any hiking trail in the lower elevations of the Cascades. Very often you will see them growing along with ferns, salal, and yellow violets (which bloom at essentially the same time). You can certainly see where this flower got its name from by taking a closer look at the plant. Most of the structure of the trillium, such as leaves, pedals, flower parts, etc…) are exactly three in number. If not, they are in multiples of three. What a perfectly designed native flower! The flower grows from the top of a very sturdy stalk which rises out of the ground from the rhizome, which is the “storage root” of the plant.

I hope you get out and see some for yourself and while you are at it, keep letting me know what else you are seeing out there!

Tuesday, March 24, 2009

Skunks in the forest!

I get extra excited and antsy this time of the year. My nature wanderings take me to explore where the wildflowers can be viewed and photographed from April until at least July. While there are many spectacular native flowers that are still waiting “just around the corner” to put on their annual show, one beast of a native flower already has been showing off in areas around us and I just saw my first group of them for 2009. Skunk Cabbage (Lysichitum americanum) has long been one of the most amazing head-turning plants that I’ve ever seen!

I recall back as a child on a large farm in Oregon’s Willamette Valley when, in mid-March, these fascinating yellow “blobs” would begin to emerge from the swampy forest grounds lining our fields. I always was afraid to get near them! In early spring the skunk cabbage pokes its yellow (up to eight inches) flower and spike out of the wet area where it thrives. Sometimes, the green leaves will appear at the same time as the flowers, but most often, the bright yellow flowers are all that is seen for a week or so. The leaves are said to be the largest deciduous leaves in North America, growing to five feet in length! These large leaves were employed by virtually all western Washington tribes like waxed paper, for wrapping food, lining cooking pits, separating foods being cooked together, and drying berries on. The stinky, skunk-like smell they carry proves critical to this early blooming flower to attract small flies and gnats for pollination. Bees will pollinate the flower as well later in the spring once they become active. Native animals also rely on them as a food source as bears regularly dig up the underground rhizomes to eat, as they are packed with starch. As impressive as skunk cabbage may look, they also perform a miraculous feat each spring by generating their own heat to melt the snow away from them! If you catch the right time, you can put your finger into the cavity formed by the spathe (the bright yellow shield) and when you touch the flower head, your fingertip warms up noticeably. Biologists have found that skunk cabbage flowers produce warmth over a period of 12-14 days, remaining on average 68 degrees above the outside air temperature, whether during the day or night! This explains the remarkable sight of seeing a skunk cabbage flower emerged from the ground with snow still surrounding it, but a circular ring of snow melted away from the plant.
So put on your muddy boots or go for a drive past regional muddy wetlands and get out to enjoy the show of this "Skunk in the forest"!

Tuesday, February 3, 2009

Trumpeter vs. Tundra Swans

Late yesterday afternoon as it was getting dark I ventured past a few favorite winter locations to check on the current status of the Snoqualmie Valley swan population. I found a nice group of 40-50 Trumpeter Swans in a field halfway between Duvall and Carnation. Nice! But...wait...5 minutes with the binoculars after I photographed a couple of them closer to me revealed a nice surprise: one of the 50 was a Tundra Swan! Alas...how to tell the difference!?!?! It is much easier like this when they are mixed, as the Trumpters are larger. But alone it is a "who know??!!" guess...ah, but not maybe so. I look for my one easier trait to see if they are Trumpeter Swans: a somewhat flat portion on their head heading from the bill up to the top of the head. Tundra Swans are more rounded. There are other things too, like a thicker bill, more black/wider bill, and more deeply black around the eyes. But instead of me trying to explain these things that you can only really "tell" by seeing, one good source is David Sibley and a website page dedicated to this exact mystery! Go here to the Sibley Guide and have fun! Let me know if you see more Tundra Swans around here - they are more common in SW Washington and Eastern Washington in winter, unlike our areas northward on the west side of the Cascades up into B.C. which are almost all Trumpeter Swans.
Fun stuff trying to be a biologist!

(photos: Trumpeter Swan in near dark of sunset --- no, I didn't get the Tundra Swan as it was at least 200' away from me and these were only about 50' away! But I'll keep trying! The swans shown below on Jan 25th from Ridgefield NWR are Tundra Swans, for what it is worth....)