A Comparative Study of Sandhill Crane Subspecies
Author : John H. Baldwin
Publisher :
Page : 346 pages
File Size : 34,61 MB
Release : 1977
Category : Sandhill crane
ISBN :
Author : John H. Baldwin
Publisher :
Page : 346 pages
File Size : 34,61 MB
Release : 1977
Category : Sandhill crane
ISBN :
Author : Raymond J. Buller
Publisher :
Page : 24 pages
File Size : 21,36 MB
Release : 1967
Category : Bird populations
ISBN :
Fall-migrating sandhill cranes arrived at congregation sites in southern Canada and in the States of the Central Flyway between late July and early October. Sandhills peaked at about 100,000 birds at way stations during the fall of 1964. Footprint measurements indicated that the lesser sandhill was by far the most numerous subspecies at way stations in Montana, North Dakota, South Dakota, and Colorado. These measurements also indicated that flocks stopping over in Wyoming, Kansas, and Oklahoma contained a significant number of Canadian sandhill or greater sandhill or both. A selective collecting program indicated that the footprint measurement technique overemphasized the incidence of the greater sandhill at way stations in North Dakota and South Dakota. Whooping cranes and sandhills were occasionally observed together during the early part of the fall migration. At times, fall-migrating sandhills fed on standing and harvested grain crops in Canada and the States of the Central Flyway, but seldom were depredations considered serious.
Author :
Publisher :
Page : 534 pages
File Size : 34,25 MB
Release : 1981
Category : Anatidae
ISBN :
Author : U.S. Fish and Wildlife Service
Publisher :
Page : 826 pages
File Size : 27,15 MB
Release : 1976
Category : Animals
ISBN :
Author :
Publisher :
Page : 542 pages
File Size : 45,29 MB
Release : 1981
Category : Ecology
ISBN :
Author : Library of Congress. Copyright Office
Publisher : Copyright Office, Library of Congress
Page : 1914 pages
File Size : 50,28 MB
Release : 1979
Category : Copyright
ISBN :
Author : George Archibald
Publisher :
Page : 36 pages
File Size : 44,31 MB
Release : 1975
Category : Cranes (Birds)
ISBN :
Author : Paul A. Johnsgard
Publisher : University Press of Colorado
Page : 384 pages
File Size : 47,85 MB
Release : 2020-01-27
Category : Nature
ISBN : 1607324377
A look at the natural history, biology, and conservation issues faced by cranes in North America, featuring beautiful photos. Accompanied by the stunning photography of Thomas D. Mangelsen, A Chorus of Cranes details the natural history, biology, and conservation issues surrounding the abundant sandhill crane and the endangered whooping crane in North America. Author Paul A. Johnsgard, one of the leading authorities on cranes and crane biology, describes the fascinating social behaviors, beautiful natural habitats, and grueling seasonal migrations that have stirred the hearts of people as far back as medieval times and garnered the crane a place in folklore and mythology across continents. Johnsgard has substantially updated and significantly expanded his 1991 work Crane Music, incorporating new information on the biology and status of these two North American cranes and providing abbreviated summaries on the other thirteen crane species of the world. The stories of these birds and their contrasting fates provide an instructive and moving history of bird conservation in North America. A Chorus of Cranes is a gorgeous and invaluable resource for crane enthusiasts, birders, natural historians, and conservationists alike. The University Press of Colorado gratefully acknowledges the generous support of the Iain Nicholson Audubon Center at Rowe Sanctuary, Audubon Nebraska, Ron and Judy Parks, Wagon Tongue Creek Farm, and the Trull Foundation toward the publication of this book. “In this glorious book, Paul Johnsgard and Tom Mangelsen have captured the very essence of these ancient birds—their beauty, grace of movement, and fascinating lives. It is a must for crane lovers, birders, and all who love the natural world.” —Jane Goodall “Johnsgard is the world’s leading synthesizer of our knowledge of birds and the presenter of such varied and complex information to both professional and lay audiences. He has made an enormous contribution to our planet . . . In his latest book, A Chorus of Cranes, the splendor of Johnsgard’s lyrical style is matched by incomparable images from one of the world’s best-known photographers, and fellow Nebraskan, Tom Mangelsen.” —George Archibald, Co-Founder and Senior Conservationist, International Crane Foundation
Author :
Publisher :
Page : 816 pages
File Size : 18,46 MB
Release : 1979
Category : Hydrology
ISBN :
Author :
Publisher :
Page : 630 pages
File Size : 25,79 MB
Release : 1960
Category : Wildlife conservation
ISBN :