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.

Learn how to identify a cerulean warbler. These lovely birds was migrate north from Jamaica to the deep forest undergrowth of the Northeast or beyond to southeastern Canada. One place to see these ...

DR. TICEHURST has for long been recognized as an authority on the willow-warblers, and this critical revision of that group is a model of what such a work should be. He has based it primarily on ...