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Author: Fred A. Ryser
Publisher:
ISBN: 9780874170795
Category : Science
Languages : en
Pages : 604
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Book Description
Based on over thirty years of research, this comprehensive book on the diverse bird life of the Great Basin discusses the physiology, behavior, ecology, and distribution of over 300 species, including information on navigation, flight, territorial behavior, courtship, nesting, hunting, and the great migrations that pass through the region each year.
Author: Fred A. Ryser
Publisher:
ISBN: 9780874170795
Category : Science
Languages : en
Pages : 604
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Book Description
Based on over thirty years of research, this comprehensive book on the diverse bird life of the Great Basin discusses the physiology, behavior, ecology, and distribution of over 300 species, including information on navigation, flight, territorial behavior, courtship, nesting, hunting, and the great migrations that pass through the region each year.
Author: Fred A. Ryser
Publisher: Max C. Fleischmann Series in G
ISBN: 9780874170801
Category : Nature
Languages : en
Pages : 0
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Book Description
A must for all birdwatchers in the Great Basin.
Author:
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 240
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Book Description
Author: David Lukas
Publisher:
ISBN: 9780878423972
Category : Bird watching
Languages : en
Pages : 0
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Book Description
Watchable Birds of the Great Basin offers wildlife enthusiasts, families, and birders fascinating facts about nesting behavior, birdsongs, foods, and flight characteristics of 80 of the most fun-to-watch species in Nevada and parts of Utah, Oregon, Idaho, and California.
Author: Dean E. Medin
Publisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 8
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Book Description
Author: Dean E. Medin
Publisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 28
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Book Description
Bird censuses were taken on 11 study plots along an elevational gradient ranging from 5,250 to 11,400 feet. Each plot represented a different vegetative type or zone: shadscale, shadscale-Wyoming big sagebrush, Wyoming big sagebrush, Wyoming big sagebrush-pinyon/juniper, pinyon/juniper, pinyon/juniper-mountain big sagebrush, mountain big sagebrush, mountain big sagebrush-mixed conifer, mixed conifer, mixed conifer-alpine, and alpine. Eighty-nine bird species were observed. The total number of birds and bird species followed a skewed bell-shaped distribution. Some birds were quite narrow in their choice of vegetative zones while others showed very little selectivity. Both total number of individual birds and bird species appeared to reach highest values in study plots with a substantial component of mountain big sagebrush.
Author:
Publisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 16
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Book Description
Author: John Woodyard
Publisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 16
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Book Description
During 1981 and 1982, Dean E. Medin conducted bird censuses along an elevational gradient (5,250 to 11,400 feet) near and on Wheeler Peak of east-central Nevada. Twenty years later we conducted bird censuses on seven of his 12 plots. Data from the bristlecone pine--Pinus longaeva--plot were collected in 1981 but not published (data on file with the Great Basin National Park). Data for the remaining six plots were collected in 1982 and published. In general, all 2002 bird counts from the seven study plots recorded substantially fewer numbers of total birds and, with the exception of the bristlecone pine and alpine study plots, recorded fewer bird species as compared to Medin's counts of 1981 and 1982. Total numbers of birds counted in the 70 visits (10 census visits for seven study plots) to all study plots for 1981 and 1982 was 5,034. This compares to 1,930 for 2002, or a reduction of 3,104 birds--a 62 percent reduction. Total number of bird species sighted in 1981 and 1982 was 83 compared to 75 in 2002, or a reduction of eight. Sixty-three species of birds were common to the 1981/1982, and the 2002 censuses. Twenty species of birds were sighted in 1981 and 1982 that were not sighted in 2002, and 12 species were sighted in 2002 that were not recorded in 1981 and 1982.
Author: Dean E. Medin
Publisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 28
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Book Description
Bird censuses were taken on 11 study plots along an elevational gradient ranging from 5,250 to 11,400 feet. Each plot represented a different vegetative type or zone: shadscale, shadscale-Wyoming big sagebrush, Wyoming big sagebrush, Wyoming big sagebrush-pinyon/juniper, pinyon/juniper, pinyon/juniper-mountain big sagebrush, mountain big sagebrush, mountain big sagebrush-mixed conifer, mixed conifer, mixed conifer-alpine, and alpine. Eighty-nine bird species were observed. The total number of birds and bird species followed a skewed bell-shaped distribution. Some birds were quite narrow in their choice of vegetative zones while others showed very little selectivity. Both total number of individual birds and bird species appeared to reach highest values in study plots with a substantial component of mountain big sagebrush.
Author: Florence Merriam Bailey
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 702
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Book Description
