The Grebes 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

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

- 8 colour plates including 4 specially commissioned paintings by Jon Fjeldså, showing adults of all species and many juveniles, immatures, and subspecies

- 116 black-and-white drawings illustrating special features and behaviour

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

- Full bibliography and index

Those who are unfamiliar with grebes tend to think of them as odd ducks, but their strange behaviours reveal them to be fascinating and intriguing birds. Grebes are unusual and unique in many ways: their habit of feather-eating; their method of sunbathing; their special method of underwater propulsion; the unusual structure of their feet; their courtship behaviour; and their floating nests. As the birds are dependent upon shallow wetlands, they are strongly affected and threatened by our use of their habitats, leading to dwindling populations and even extinction of some species.

In this new addition to the Bird Families of the World series Jon Fjeldså, a renowned expert on the grebes, provides an overview of the results of all the research that has been done on grebes. Part I contains a brief presentation of the grebe family, constraints of diving, the relationships between grebes and divers, and the morphology of grebes. Part II covers their biogeography, ecological distribution, feeding ecology, behaviour and communication, breeding biology, environmental threats, and conservation. Part III follows with 22 species accounts, including distribution maps. The plates section contains sixteen stunning paintings showing all the grebe species, by Jon Fjeldså.

The Grebes, like its companion volumes in the series, will be an indispensable work of reference for ornithologists, whether professional or amateur.