More Legal Wrangling over Michigan’s Wolves

By Glen Wunderlich

Michigan wolf management is now in the hands of a Washington D.C. federal district court judge.  At issue is whether wolf populations have fully recovered.  On one side of the matter is the Humane Society of the United States (HSUS), which claims that the gray wolf still needs protection under the Endangered Species Act (ESA); on the other side is the U.S. Sportsmen’s Alliance Foundation (USSAF) and others such as Michigan United Conservation Clubs defending the 2011 delisting rule against the HSUS lawsuit.

The decision may well determine whether the U.S. Fish and Wildlife Service (FWS) has the authority to delist recovered populations of a species, and return that recovered population to state management, while continuing to manage populations of the same species in different locales under the ESA. Read more

Warming Temperatures Pushing Chickadees Northward

 

The two chickadee species meet and hybridize in a narrow zone that has shifted northward 7 miles in the last decade.

Ithaca, N.Y.-The zone of overlap between two popular, closely related backyard birds is moving northward at a rate that matches warming winter temperatures, according to a study by researchers from the Cornell Lab of Ornithology, Villanova University, and Cornell University. The research was published online in Current Biologyon Thursday, March 6, 2014.
In a narrow strip that runs across the eastern U.S., Carolina Chickadees from the south meet and interbreed with Black-capped Chickadees from the north. The new study finds that this hybrid zone has moved northward at a rate of 0.7 mile per year over the last decade. That’s fast enough that the researchers had to add an extra study site partway through their project in order to keep up. Read more

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