Breeding And Wintering Areas Of Canvasbacks Harvested In Various States And Provinces

Details Book:
Author by Aelred D. Geis
Genre : Bird populations
Editor :
ISBN : UOM:39015077582156
Type Books : PDF & Epub
File Pages : 86
Download Book

The relationships between canvasback (Aythya valisineria) breeding, wintering, and harvest areas were examined by analyzing banding data. Although canvasbacks wintering throughout North America come from the same general production areas, those wintering on the Pacific coast have a stronger relationship to western production areas, notably Alberta, than those wintering on the east coast, which come primarily from Manitoba and Saskatchewan. East and west coast wintering populations have different harvest patterns. The west coast population is harvested in relatively few areas, and the kill is more heavily concentrated on the wintering grounds. Canadian harvests of the west cost wintering populations are concentrated in Alberta, while those of the east coast wintering population are concentrated in Manitoba.

Habitat Management For Migrating And Wintering Waterfowl In North America

Details Book:
Author by Loren M. Smith
Genre : Nature
Editor : Texas Tech University Press
ISBN : 089672204X
Type Books : PDF & Epub
File Pages : 586
Download Book

This important compilation on habitat management for waterfowl throughout North America addresses practicing waterfowl biologists and managers, researchers, and students of waterfowl ecology and management.

Wintering Bees In Cellars

Details Book:
Author by Everett Franklin Phillips
Genre : Agriculture
Editor :
ISBN : UIUC:30112019278776
Type Books : PDF & Epub
File Pages : 24
Download Book

Management Of Wintering Bald Eagles

Details Book:
Author by Karen Steenhof
Genre : Accipitridae
Editor :
ISBN : MINN:31951P009006812
Type Books : PDF & Epub
File Pages : 76
Download Book

Effect Of Different Methods Of Wintering Beef Calves In The Northern Great Plains On Winter Gains And Feed Costs And On Subsequent Summer Gains

Details Book:
Author by William Henry Black
Genre : Agriculture
Editor :
ISBN : UIUC:30112019343067
Type Books : PDF & Epub
File Pages : 16
Download Book

Habitat Capability Model For Birds Wintering In The Black Hills South Dakota

Details Book:
Author by Mark A. Rumble
Genre : Birds
Editor :
ISBN : MINN:31951D02996927G
Type Books : PDF & Epub
File Pages : 20
Download Book

Habitat models have considerable economic effects on management decisions and are used to predict consequences of land management decisions on wildlife. The Black Hills National Forest uses the habitat capability model (HABCAP), but its accuracy relative to resident wintering bird populations is largely unknown. We tested the model's predictive accuracy for resident nongame birds wintering in 11 vegetation structural stages of ponderosa pine, quaking aspen/paper birch, and meadows in the Black Hills, South Dakota. Six species, hairy woodpecker, gray jay, black-capped chickadee, white-breasted nuthatch, red-breasted nuthatch, and dark-eyed junco, had HABCAP coefficients for vegetation structural stages during winter. Red crossbills were not previously included in the model, so we developed HABCAP coefficients for them. Predicted abundance of winter birds in vegetation structural stages based on HABCAP coefficients differed from observed abundance for gray jays, black-capped chickadees, white-breasted nuthatches, red-breasted nuthatches, and dark-eyed juncos. HABCAP coefficients were modified to reflect observed abundance patterns of birds. These changes to HABCAP coefficients should provide managers with more appropriate estimates of land management impacts on nongame birds wintering in the Black Hills.

Concept Plan For Waterfowl Wintering Habitat Preservation

Details Book:
Author by U.S. Fish and Wildlife Service. Region 1
Genre : Water birds
Editor :
ISBN : MINN:31951002855978L
Type Books : PDF & Epub
File Pages : 422
Download Book

Global Register Of Migratory Species

Details Book:
Author by Klaus Riede
Genre : Animal migration
Editor :
ISBN : STANFORD:36105114750818
Type Books : PDF & Epub
File Pages : 348
Download Book

Birds Of The Strait Of Gibraltar

Details Book:
Author by Clive Finlayson
Genre : Nature
Editor : A&C Black
ISBN : 9781408136966
Type Books : PDF & Epub
File Pages : 560
Download Book

The Strait of Gibraltar is famous as a major point of passage for Palaearctic birds migrating between their European breeding grounds and their winter quarters in Africa. Clive Finlayson, a native of the Rock and a trained ornithologist, presents a fascinating account of the region and its resident and transitory bird life. The first chapter of the book describes the area, which broadly defined includes the Coto Donana in the north and the Merja Zerga in the south, and the geographic and climatological characteristics which make it a suitable crossing place. In scope this book goes beyond the strict definition of the Strait and, following Irby's 19th Century work, examines the rich area where Europe meets Africa. The chapters which follow describe in detail the migration patterns of the principal passage species including their origins, destinations and overall numbers, showing how the precise conditions of weather and visibility affect the specific choice of route and timing of the crossing. The breeding and wintering bird communities are then considered and the ornithology of the entire region summarized. Whether or not you have ever witnessed the thousands of raptors, storks and other birds that may make this legendary crossing in a single day, this book will conjure the spirit of this extraordinary place. Delightful illustrations by lan Willis complete an important and entertaining book.

Meddelelser Om Gr Nland

Details Book:
Author by
Genre : Geology
Editor :
ISBN : UCAL:$C205889
Type Books : PDF & Epub
File Pages : 490
Download Book