Based on phylogenetic research, this complete study of the genus Sylvia describes two new species and establishes identification criteria for all members of the

Many warblers are notoriously difficult to identify in the field (and even in the hand!) and, until now, there has been no definitive guide to the species of th

Bradypterus, Locustella, Hippolais, Cettia.

This spectacular new edition of the best-selling Helm field guide of all time covers all resident, migrant and vagrant species found in Kenya, Tanzania, Uganda,

A richly illustrated, state-of-the-art field guide for identifying European passerines in flight—the first of its kind Opening up new frontiers in birdwatchin