Download or read book Greenland Peregrines at Their Eyries written by James T. Harris and published by . This book was released on 1973 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Greenland Peregrines at Their Eyries a Behavioral Study of the Peregrine Falcon written by Denmark. Kommissionen for videnskabelige undersøgelser i Grønland and published by . This book was released on 1920 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Greenland Peregrines at Their Eyries written by and published by . This book was released on 1975 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Meddelelser Om Gr nland written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The History and Range Expansion of Peregrine Falcons in the Thule Area Northwest Greenland written by Andrew G. Gosler and published by Museum Tusculanum Press. This book was released on 2012-07-01 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the discovery and history of the most northern breeding population of Peregrine Falcons in the world, near Thule Air Base in northwest Greenland (75.9–77.6° N). Although the region was explored by scientific expeditions as early as 1818, Peregrines were not documented in the area until the 1930s. By the early 1990s the population had become well established, with a warming climate enabling Peregrines from further south to expand their breeding range northward. Here Burnham and his co-authors present their comprehensive findings on the biology and ecology of this population based on thirteen years of research from 1993 to 2005.
Download or read book Status Reports on Twelve Raptors written by David Lawrence Evans and published by . This book was released on 1982 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Depletion of fisheries due to acid rain may pose a future threat to bald eagle and osprey populations in some regions. Loss of essential habitat has affected declines in the caracara and western burrowing owl and the disappearance of the norther aplomado falcon from the southern United States. Most populations of the ferruginous hawk, marsh hawk, and prairie falcon appear stable; habitat loss is the most critical factor in population changes.
Download or read book Wildlife Abstracts written by U.S. Fish and Wildlife Service and published by . This book was released on 1976 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Scientific Report written by and published by . This book was released on 1981 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biology of the Peregrine and Gyrfalcon in Greenland written by William A. Burnham and published by Museum Tusculanum Press. This book was released on 1984 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: A ten year study began in 1972 in West Greenland to investigate the breeding biology of the peregrine falcon. Data on nesting gyrfalcons were also collected. Thirty-four peregrine nesting sites were examined in the 6050 km2 inland study area near Søndre Strømfjord. Limited research also centered in Disko Bugt and Frederikshåb. Peregrines were found nesting predominantly on high, south-facing cliffs, which overlooked large areas. The mean minimum distance between peregrine eyries was 7.7 km for the inland area (1972 and 1973) and 55 km for the coast (1974). Approximately 60 percent of the inland nesting sites were occupied each year. A ten-year average production of 1.90 young per occupied site and 2.78 young per successful site was determined. Lapland longspurs, snow buntings, wheatears, and redpolls comprised 90 percent of the peregrines diet. Raven nests and prey availability may be the most significant factor affecting falcon density. Addled peregrine eggs, eggshell fragments, and peregrine prey species were collected. Whole eggs averaged 14.3 ppm wet weight (305 ppm lipid weight ) DDE, while eggshell measurements showed a 16 percent thinning compared with pre-1940 eggs from Greenland. Prey species carried low levels of DDE. The peregrine population appears to be at a near critical contamination level, and a small increase in DDE level could contribute to a population decline. No indication of a decline has been observed during the study, and the population appears stable. The project banded 185 peregrines, from which 8 recoveries occurred. The recoveries suggest peregrines migrate south to winter in South America.
Download or read book Special Scientific Report wildlife written by U.S. Fish and Wildlife Service and published by . This book was released on 1982 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Scientific Report wildlife written by and published by . This book was released on 1949 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildlife Review written by and published by . This book was released on 1976 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Status Report on the Peregrine Falcon Falco Peregrinus in Canada written by Marilyn Martin and published by . This book was released on 1990 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Peregrine Falcon in Greenland written by James T. Harris and published by . This book was released on 1981 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecological Implications of Geopressured geothermal Energy Development Texas Louisiana Gulf Coast Region written by and published by . This book was released on 1977 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Source Manual of Raptors Occurring on Corps of Engineers Lands in the Pacific Northwest Region written by Tracy L. Flemming and published by . This book was released on 1986 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report serves as a source manual of raptors occurring on Army Corps of Engineers lands in the Pacific Northwest. It consists primarily of a comprehensive literature review covering aspects of the biology of 35 species of eagles, hawks, falcons, vultures, and owls. The manual was developed to provide biologists and resource managers with background information to facilitate the application of sound raptor management practices on project lands. While the literature is cosmopolitan, references are applicable to species found in, but not limited to, the Pacific Northwest. Approximately 4,000 citations, compiled through 1983, are included. General guidelines on raptor management and survey techniques are provided. An outline of techniques is given for habitat assessment, development, and management applicable to Federal lands, and recommendations are provided for management needs regarding various land use practices and recreational activities. Basic procedures for conducting raptor nesting surveys, migration counts, and winter surveys are outlined. Raptor studies conducted on project lands in the US Army Engineer Division, North Pacific, are summarized.
