87th Christmas Bird Count
Author :
Publisher :
Page : 440 pages
File Size : 30,87 MB
Release : 1987
Category : Bird watching
ISBN :
Author :
Publisher :
Page : 440 pages
File Size : 30,87 MB
Release : 1987
Category : Bird watching
ISBN :
Author : National Audubon Society
Publisher :
Page : 128 pages
File Size : 25,75 MB
Release : 2008
Category : Birds
ISBN :
Author : National Audubon Society
Publisher :
Page : 406 pages
File Size : 21,40 MB
Release : 1971
Category : Birds
ISBN :
Author : National Audubon Society
Publisher :
Page : 488 pages
File Size : 30,65 MB
Release : 1975
Category : Birds
ISBN :
Author : Allan D. Cruickshank
Publisher :
Page : 194 pages
File Size : 36,51 MB
Release : 1959
Category : Birds
ISBN :
Author :
Publisher :
Page : 440 pages
File Size : 49,66 MB
Release : 1982
Category : Bird watching
ISBN :
Author :
Publisher :
Page : 1028 pages
File Size : 20,92 MB
Release : 1981
Category : Wildlife conservation
ISBN :
Author : Klaus Malling Olsen
Publisher : A&C Black
Page : 191 pages
File Size : 21,66 MB
Release : 2013-09-05
Category : Nature
ISBN : 1408189070
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 is the first complete identification guide to the skuas of the world. It 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. The comprehensive text is accompanied by twelve exquisite colour plates by Hans Larsson, illustrating a wide range of plumages. In addition, there are eight pages of colour photographs and numerous black and white photographs and drawings that show key identification features. With this book, the seabird enthusiast should at last be able to identify almost every skua encountered, whether on a seawatch or at sea.
Author :
Publisher :
Page : 2568 pages
File Size : 29,43 MB
Release : 1988
Category : Agriculture
ISBN :
Author :
Publisher :
Page : 146 pages
File Size : 17,26 MB
Release : 1992
Category : Birds
ISBN :