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 ...

Our collaborative work on warblers is primarily led by Dr. David Toews and his group at Pennsylvania State University as a part of their research on the diversification in the New World wood warblers.

Male streaked fantail warblers literally "sew" surrounding blades of grass together to form a cozy nest for potential mates and offspring. The "thread" used comes from a special spider silk the ...