Cassell's book of birds; vol. 2

The volume is a natural-history survey of birds, presenting illustrated species accounts across raptorial, nocturnal, aerial, and songbird groups. It organizes families—hawks and eagles, kites and buzzards, vultures, owls, swallows and swifts, nightjars, and numerous passerines—offering descriptions of form, plumage, measurements, habits, diet, breeding, and geographical range. Plates and engravings accompany entries to clarify identification. Taxonomic notes compare related species and provide vernacular and scientific names. Practical observations include hunting behavior, nesting, migration, and interactions with humans. The work serves as a field-oriented reference combining anatomical detail, natural history anecdotes, and classification for readers interested in avian diversity.