A further examination of wing and tail formulae in Empidonax and Contopus flycatchers
Journal
Era of Allan Phillips: A Festschrift
Year
1997
Online Text
Abstract
Useful new information on identifying and sexing specimens of Empidonax and Contopus flycatchers, two of the most critically examined genera of North American birds, is presented in a format most useful for in-hand determinations.
File attachments
Pyle.pdf
(370.37 KB)
