In historical times, this river could go where it wanted to go, but now we want to make it go through a straight line,'' biologist
Powell thinks that, while it is unlikely that migratory birds will face mass extinction, their declining numbers still translate into an international tragedy.
The standard for critical habitat, according to Phil Detrich, a wildlife biologist
with the Fish and Wildlife Service, is no adverse modifications by federal actions.
In 1997, Amelia and her mate, whose identity is unknown because biologists
have been unable to read his legband, became the first successful nesting pair in Connecticut in more than 50 years.
say much can be done to stop the spread of invasive species locally.
Time for action: A decade ago, biologists
took an unusual step to help the vanishing panthers.
Dale McCullough, a wildlife biologist
at the University of California at Berkeley, says that, in the Pacific Northwest, biologists
"were forced to plan at a time when all the old-growth was essentially gone.
Fish and Wildlife biologist
Dan Tappe, left, and David Freed of the U.
A species that survives only in captivity is actually extinct," explains Petra Kaczensky, a biologist
at the Salzburg Zoo in Austria who is working on one of the takhi reintroduction programs.
It's "a really creative idea" to use bird behavior, says evolutionary biologist
McMaster's primary duties as PF's western biologist
will include starting new chapters and working with the existing 4,000 PF members and 36 PF chapters in California, Idaho, Oregon, Utah, and Washington.
Now, as quickly as sections of the river are cleared, water puddles quickly become visible, said Nancy Hanson, a wildlife biologist
for the Angeles National Forest stationed in Saugus.