Learn what a prothonotary warbler looks like and sounds like and where to find one. Plus learn about their nesting habits and ...

The Kirtland’s warbler, a species that was close to extinction five decades ago, is now thriving and has been removed from the U.S. federal list of endangered species. Where there were fewer than 200 ...

Detective work by scientists has shown that a unique songbird found by a citizen scientist in Pennsylvania is the offspring of a hybrid warbler mother and a warbler father from an entirely different ...

At its darkest hour, around the mid-1970s, only 167 nesting pairs of Kirtland's warblers were counted in the world. Only 20 singing males could be found in Michigan's nearly million-acre ...

Last May, birder Lowell Burket scored a major find. The Pennsylvania native photographed what he believed was a super-rare, three-species hybrid on his property, a guess that was just confirmed in a ...