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...
This is reprinted in brochure format from the original Fish and Wildlife Leaflet No. 10 (1987; Supt of Docs no.: 149.13/5:10) This brochure compiles various conversions from metric to English and from English to metric systems, as well as from...
