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The range limits for different bird species are often changing, and recently many wintering birds have been shifting northward. The question is whether these range shifts are due to milder winter temperatures, or to an increase in bird feeding, which…

Although males can easily be distinguished from females in many species, in Project FeederWatch we only report the largest total flock size for each species seen at one time. But what could we learn if we counted males and females…

Project FeederWatch’s David Bonter returned to Martha Stewart’s television show in March to talk about bird nests and eggs–just in time for spring! The two segments featured an array of nests and eggs from the Cornell University Museum of Vertebrates…

Are you interested in learning more about the birds at your feeders while contributing valuable observations? Watch the video to learn more about Project FeederWatch and how you can help!

Many FeederWatchers do much more than just put out feeders to attract birds – they sculpt their yards to be veritable bird sanctuaries (see article in 2011 Winter Bird Highlights).  In fact, landscaping your yard can be beneficial to both…

The FeederWatch team continues to explore the feeding behavior of birds. Watch the video below for the latest news on our field research.
Visit our web site for more information on using RFID technology to track birds.
Special thanks to the Cornell…

Have you ever watched birds flit to your feeders and wondered how they achieved the magnificent ability of flight?  The evolution of flight has been an intriguing puzzle ever since evolutionary biologists realized that modern birds evolved from dinosaurs.  An…

Understanding how pathogens, such as disease-causing bacteria, spread and change over time is critical to management of infectious diseases. Implementing effective vaccination strategies and successful disease prevention methods depends upon such research.

House finches are providing a unique window into disease…

Where do all the cardinals live? Are Anna’s Hummingbirds expanding their winter range? What years have nuthatch irruptions? The new FeederWatch trend graphs are here to provide the answers in a colorful and fun way!

Animated maps…