Around 90 percent of bird species are socially monogamous, but if the bond is broken without death, it is known as divorce.

Immature: similar to spring female; some immature females very dull with indistinct streaking and much reduced yellow on sides of breast. Compare to the Magnolia and Cape May Warblers, which have ...

If the Kentucky warbler hadn’t gotten caught in the net, scientists may have never known that species was present at Tremont. The female warbler had a brood patch — an area of featherless skin ...