Identification Guide to North American Birds Part 1: Columbidae to Ploceidae [Pyle ID 1- Passerines]
Relationships Among Body Mass, Fat, Wing Length, Age, and Sex for 170 Species of Birds Banded at Pow
Identification Guide to North American Birds Part 2: Anatidae to Alcidae [Pyle ID 2- Non-passerines]
Illustrations by RUCK, Siobhan; HOWELL, Steve N.G.