Bøker i Helm Identification Guides-serien

This guide covers the 26 species of northern hemisphere pipits and wagtails in detail. It treats identification in the field and in the hand, and includes colour plates, detailed distribution maps and sonograms of songs and calls.

Raptors of the World is the definitive handbook to this most popular group of birds. This field guide uses all of the plates from Raptors of the World, with a concise, revised text on facing pages, to create an invaluable reference covering all 340 raptor species.

Based on phylogenetic research, this complete study of the genus Sylvia describes two new species and establishes identification criteria for all members of the family. A lengthy introduction explains the background to the research.

The definitive book on owls. Fully describes and illustrates every known species and subspecies of owl, as well as presenting the latest evidence on owl taxonomy, based on DNA work and vocalisations. Includes maps of every species and sonograms.

Featuring updated data for this second edition, this is a field guide to the tracks and signs of European birds. It covers tracks, trails, nests, roosts, feeding and behavioural signs, pellets, droppings, and feathers and skulls, with illustrations showing the signs as they appear in the field.

This authoritative handbook, part of the Helm Identification Guide series, looks in detail at the remarkable and diverse birds of paradise--perhaps the ultimate birders'' birds.This Helm Identification Guide covers the taxonomy, biology, and conservation, of birds of paradise and bowerbirds in great detail, including a series of plates packed with beautiful illustrations from Richard Allen, and hundreds of photographs covering the full range of racial and age-related plumage variety. For any naturalist, the name "New Guinea" conjures up one group of animals above all others--the sensational birds of paradise, renowned for their dazzling and diverse plumages. This book, the first comprehensive monograph to the group this century, also includes the bower birds, a group that extends into Australia that is perhaps best known for the males'' construction of "bowers," structures of twigs and sticks used to tempt in females.The product of almost two decades of research and scholarship and a must-have book for anyone interested in these stunning birds, this will remain the standard reference on birds of paradise for many years to come.