Posts Tagged ‘research’

WE SHOULD PAY ATTENTION TO THE WARBLERS’ WISDOM

December 22, 2014

I already knew that we humans are woefully slow to see what’s happening in the natural world, but here comes scientific evidence that even without TV weathercasts, warblers foresee weather problems far better than some slow-moving bipeds.

Here’s one newspaper account of how warblers fled the U.S. to avoid a killer storm.

Here’s a summary of that same report on warbler wisdom from a science website.

That violent series of storms killed 35 humans who chose not to migrate.  Final Score: Warblers +1, Humans -35.

COMING TO YOUR NEIGHBORHOOD?

August 19, 2014

Is avian keratin disorder headed your way? Here’s a blog I wrote about one case in my garden here in southwestern Oregon…then response from a USGS scientist tracking the problem.

I don’t know what’s happened to my Red-breasted Nuthatch. I say “mine” because he seems to live on my suet feeders…and seeing how deformed his beak appears, I can see why.
[SEE BELOW FOR LIKELY EXPLANATION]
How could this poor guy possible pry bugs out of bark crevices when his upper mandible is a half-inch longer than the lower. Any ideas about what’s happened here? Birth defect? Lower mandible appears normal size, while upper toooooo long.BEAK-ODD1` (1280x960)

BEAK-ODD2 (1280x960)

BEAK-ODD3 (1280x960)

BEAK-ODD5 (1280x960)
Help me solve the Case of Mismatched Mandibles.
Ornithologist Pepper Trail works at the U.S. Wildlife Forensic Laboratory here in Ashland (the only such lab in the whole world!). He has pointed me to what seems to be the explanation. Click for link to info on Cornell’s great website on birds.

HERE IS SCIENTIST’S RESPONSE:
I am investigating an epizootic of similar bill deformities in Alaska. This epizootic has recently spread to the Pacific Northwest, with a large cluster of bill deformities appearing in the Puget Sound region. Birds affected by this ‘avian keratin disorder’ have bills that are abnormally long and often crossed, such as in this nuthatch. We’ve determined that the keratin layer of the beak (like the material in a person’s fingernails) is growing too rapidly. Despite extensive testing, we still don’t know what’s causing the problem. We’ve documented beak deformities among a large number of species, including chickadees, crows, nuthatches, jays, woodpeckers, ravens, and several raptors. We are very interested in receiving reports of any birds with abnormal bills such as this one. Please visit our website at the USGS Alaska Science Center or contact me directly:
http://alaska.usgs.gov/science/biology/landbirds/beak_deformity/index.html
Colleen Handel
Research Wildlife Biologist
USGS Alaska Science Center
cmhandel@usgs.gov

How do they do that?

March 2, 2010

Two interesting recent discoveries on the nano-tech of bird biology.

The concentration of iron compounds in nerve endings  enables some birds to use megnetic “measurements” to help them navigate.

And then, how do shorebirds get those mouthfuls of food and water up the long thin beak without having to tilt their head back between each gulp? Ever watch a phalarope feeding on the water’s surface?  They use the physics of surface tension.