Fundamentals of Ornithology

adult altricial Amer American Goldfinch animals Arboreal Archaeopteryx Avian Baker behavior Bill Bird Migration bird song bones brown buff Bull Classification color Condor coverts crustacea cuckoos dorsal Downy ducks Eggs Fauna feathers feeding feet female flexor Flight strong flightless Friedmann genera gray gregarious ground gulls Habits hallux hatching hawks Hellmayr Hist hummingbirds Ibis Incubated insects Jour Legs short London Madagascar male Mayr migration migratory molt muscles neck nest nestling Nidicolous Nidifugous Nonmigratory North America notes Ornith ornithologists owls pair passerine passerine birds pattern Physical characteristics plumage Proc Range ratite rectrices References region remiges Ridgway Sexes alike Skutch Song Sparrow species subspecies Synonymy tail short tarsometatarsus Technical diagnosis toes Total length trees Univ usually vertebrae W. H. Hudson Warbler Wils Wings short winter Witherby woodpeckers yellow young Zool