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...
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 ma...
Until recently, gulls were a group that inspired dread among birders, due to the bewildering variety of plumage, age groups, and races, many of which are very difficult indeed to separate, even to species. Things changed in 2003 with the publication of Klaus Malling Olsen's Gulls of Europe, Asia and North America, a plate-based title that made accurate identification of gulls a realistic possibility for the first time. Gulls of the World is a companion and successor to that seminal work.
This photographic identification guide covers all of the world's gull species,...
Until recently, gulls were a group that inspired dread among birders, due to the bewildering variety of plumage, age groups, and races, many of whi...
The standard text on the identification of the northern hemisphere's gulls, this book covers the plumage variation through age and subspecies of all 80 species in the region. With exhaustive coverage, detailed maps, and superb plates and photos, this book remains the definitive work on these birds, which represent the trickiest of all ID challenges.
The standard text on the identification of the northern hemisphere's gulls, this book covers the plumage variation through age and subspecies of all 8...
