Warming temperatures are pushing two chickadee species—and their hybrids—northward

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 will be published online in Current Biology on Thursday, March 6, 2014.

Read the whole article on Physorg

More from Physorg