Biogeography

Follow up: A first for Illinois, discovered in the Field Museum's collection

Last week I wrote about the recent publication detailing the detective work that uncovered the first record of Western Flycatcher for Illinois. I didn't have time to include photos of the actual specimen, so here they are. The two birds on the left are Yellow-bellied Flycatchers from Illinois and the two on the right are Western Flycatchers from California (presumably Pacific-slope Flycatchers). The star of the show--Illinois' only Western Flycatcher--is in the middle.

Meet the newest species of bird in North America: A Gunnison Sage-Grouse specimen arrives in Chicago

The last new species of bird to be described in the United States--in fact the first since the 19th century--was Gunnison Sage-Grouse (Centrocercus minimus), described to science in 2000 on the basis of behavioral, vocal, and morphological (size and plumage) differences from its larger, more widespread cousin, the Greater Sage-Grouse (Centrocercus urophasianus).

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