| Series | Helm Identification Guide Series |
| Authors | Klaus Malling Olsen, Hans Larsson |
| Language | English |
| ISBN | 9781408189078 |
| Publisher | Bloomsbury |
| Pages | 168 |
| Format | 24 x 17 cm |
| Binding | hardcover |
| Pictures | richly illustrated, full color |
| Year of publication | 2013 |
Skuas (and jaegers) are a fascinating and popular group of seabirds that make up a subfamily of just seven species. They can be divided into two main groups: the larger species of Catharacta skuas which are mainly found in the southern hemisphere (with Great Skua breeding in the north), and the three Stercorarius species (also known as jaegers) which breed in the northern hemisphere.
Both northern and southern skuas breed at high latitudes and several species are long-distance migrants, performing spectacular migrations through most of the world's oceans, sometimes even flying overland.
The individual plumage variation in some species is enormous, creating one of the most puzzling yet fascinating challenges in modern field identification. This guide is designed to enable species identification and correct ageing, and the information presented is based on years of study in the field, detailed examination of photographs and museum skins, and extensive research of the relevant literature.
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