Readers share photos of gray bird species that live across America. Learn about the variety of gray colored birds you should ...

Small bird populations are declining. Here's what researchers on Cape Cod are doing. Denise Coffey. ... The sanctuary is home to 50 to 60 known species of birds, Junda said, ...

In their natural laboratory, the 100-acre island called Daphne Major, the Grants and their assistants watched the struggle for survival among individuals in two species of small birds called ...