Skuas (or jaegers) are a popular group of seabirds. This title examines in detail all the identification problems associated with this difficult group. The taxonomy of the world's seven species of skuas has long been a subject of debate, compounded by the difficulty of distinguishing between the four catharacta species in the field. Klaus Malling ...
Covering 22 species found in the Western Paleartic and North America, this guide lists each species under the sections of: field identification; moult; description; geographical variation; measurements; and weight. It includes a quick reference section summarizing the key identification features.
The gulls are a large family of seabirds, familiar and distinctive as a group, but one of the most challenging to separate at the species level, especially in their various stages of immature plumage. This guide offers the most comprehensive treatment ever published on the gulls of North America, Europe, and Asia. Klaus Malling Olsen and Hans ...
This book includes some of our most familiar seabirds as well as some little-known and globally threatened species. Gulls are also great travellers, with many North American species wandering to the UK and causing both confusion and excitement for British birders.This guide, like the others in the series, combines text with illustrations, and ...
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