When identifying black-throated blue warblers, look for field marks like the white belly and white wing spot. The male’s dark colors reflect this bird’s favorite migration habitat: in the ...

As Steve Goodman ventures deeper into the towering forest, he keeps his ears open and binoculars close. With a recording ...

the yellow-rumped Warbler’s nest contains 3 to 6 eggs. Polytypic (6 ssp.). Length 5.3". Spring male: crown and back blue-gray streaked with black. Yellow crown patch, distinct rump patch ...