This is a guide to altricial passerines. It has an explanation of variables used for aging birds and an explanation of methodology employed, and provides information obtained while recording the early aging of the Dusky Flycatcher, the Carolina...
Bill and Jean Thomas oral history interview with Roger Kaye. Note that Mr. and Mrs. Thomas were not Fish and Wildlife Service employees, but were long time residents of the Upper Porcupine and Upper Black Rivers in Alaska.
Blue-winged Teal (Anas discors; BWTE) are the
second most abundant duck (family Anatidae)
species in North America and are widely distributed
(Rowher et al. 2002). Its breeding range stretches from the southern high-plains of New Mexico