Sibley Guide To Birds
2000. David Allen Sibley. The Sibley Guide to Birds provides a wealth of new information such as captioned illustrations which show many previously unpublished field marks and revisions of known marks. Nearly every species is shown in flight. Measurements include length, wingspan, and weight for every species. Complete voice descriptions are included for every species. Maps show the complete distribution of every species, summer and winter ranges, migration routes, and rare occurrences. 545 pages, flexi-bound, over 6,600 detailed illustrations covering 810 species.