Pelicans, Cormorants, and their Relatives pdf epub mobi txt 电子书 下载 2026

- Bird Families of the World is a multivolume series of handbooks, intended to serve the interests of both the professional scientist and the ever-growing body of amateur ornithologists. Each volume provides a comprehensive and accurate synthesis of our knowledge of one bird family or several related families

- 5 general chapters on the biology, feeding ecology, breeding behaviour, evolutionary relationships, and conservation of the birds in the family

- 12 specially commissioned colour plates by Andrew Mackay, showing adults of all species and many juveniles, immatures and subspecies

- 159 black-and-white drawings by John Busby, illustrating special features and behaviour

- Descriptions of each individual species, including appearance, weights, and measurements; field characters; voice; habitat and food; breeding behaviour; life cycle; and range and status (with distribution map). This provides the most comprehensive and up-to-date species-level information available

The pelecaniformes are a large and important group of seabirds, containing many spectacular species. This book addresses the breeding biology of the six pelecaniform families, which comprise the closely-related core groups (pelicans, cormorants/shags, darters, gannets/boobies) and their more distant relatives, the frigate birds and tropic birds. Many fundamental questions can be addressed through the pelecaniformes: Why do they breed in colonies? What are the links between their feeding methods and their reproduction? What part does territorial and pairing behaviour play in their life-cycles? These and scores of comparable issues, including those related to man, are woven here into a richly interpretative text.

The author's approach to the subject is threefold. First, the pelecaniformes are placed within the framework of four discrete disciplines, with chapters on evolutionary relationships, comparative behaviour, ecology, and the birds' relationship with humans. Secondly, each of the six families is discussed, elucidating the range of taxonomy, behaviour, and ecology within each. Finally, we progress to specific level, using the same structure as for the family accounts. In this way, each of the 60-odd species can be understood not just as discrete units, but as part of their family and order. The book is unique in its coverage of the entire order and in its combination of facts and interpretation.

Pelicans, Cormorants, and their Allies will enable readers not only to identify the many spectacular species which make up this large and important group of seabirds, but also to understand their breeding biology.