Download or read book Inter and Intraspecific Variation of Breeding Biology Movements and Genotype in Peregrine Falcon Falco Peregrinus and Gyrfalcon F Rusticolus Populations in Greenland written by Kurt K. Burnham and published by . This book was released on 2007 with total page 498 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 Breeding Biology and Ecology of the Peregrine Falcon Falco Peregrinus in West Greenland written by William A. Burnham and published by . This book was released on 1975 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Peregrine Falcon Populations written by Joseph James Hickey and published by . This book was released on 1969 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of an international conference sponsored by the University of Wisconsin, 1965, with the support of The National Institutes of Health, Public Health Service, US Department of Health, Education and Welfare, The Rachel Carson Fund of The National Audubon Society, The Frank M. Chapman Fund of The American Museum of Natural History, The Harry Steenbock Fund of the Wisconsin Society for Ornithology.
Download or read book Peregrine Falcon Eastern Population Falco Peregrinus written by and published by . This book was released on 1991 with total page 42 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 Seasonal Home Range Variation and Spatial Ecology of Peregrine Falcons Falco Peregrinus in Coastal Humboldt County CA written by Elizabeth-Noelle F. Morata and published by . This book was released on 2018 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: Peregrine falcons (Falco peregrinus) are renowned for their migratory habits, with 'peregrinus' often translated as 'wanderer' or 'pilgrim'. However, their migratory habits may differ by population and some peregrine may falcons forgo migration when climate and resources remain stable. To examine peregrine falcon home range and space use, I fitted GPS-satellite transmitters to nine breeding adults in coastal northern California, an area with a mild climate and abundant waterbird populations. I used kernel density estimates and time-local convex hulls to examine seasonal home ranges and within-home range habitat use. All nine peregrine falcons remained resident in their territories year-round, and home ranges continued to center around the location of the nesting structure (i.e. bridge or cliff face) even during winter. Home range sizes were larger in the breeding season than in winter, indicating that peregrines did not need to travel farther to find food during the winter and that local conditions were conducive to year-round occupancy. Intensity of space use within the home range was influenced by several environmental covariates, including distance to water, distance to nest site, elevation, prey density, terrain ruggedness and habitat type. Peregrine falcons preferred habitat types associated with nest sites, where they remained year-round, and with open areas such as mud flats, beaches, some agricultural lands, and inland standing water. Intensity of use decreased with distance from bodies of water, distance from nest sites, and terrain ruggedness. Intensity of use was positively associated with elevation and an index of prey density. Our results demonstrate non-random space use within the home range and provide new information about previously unstudied non-migratory behaviors of coastal breeding peregrines in Humboldt County, California.
Download or read book Peregrine Falcon written by and published by . This book was released on 1994 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Peregrine Falcon Populations written by Tom J. Cade and published by . This book was released on 1988 with total page 1030 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Peregrine falcon Populations written by and published by . This book was released on 1965 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hunting Tactics of Peregrines and Other Falcons written by Dick Dekker and published by Hancock House. This book was released on 2009 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the foraging habits and capture rates of four species of bird-hunting falcons; Peregrine, Merlin, Gyrfalcon, and Prairie Falcon. Eight of the nine study areas were situated in western Canada in widely different habitats, and the observation periods intermittently included all seasons over 44 years, 1965-2008.
Download or read book American Peregrine Falcon written by and published by . This book was released on 1982 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Peregrine falcon Populations written by and published by . This book was released on 1965 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Peregrine Falcon written by and published by . This book was released on 1995 with total page 2 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 Working Bibliography of the Peregrine Falcon written by Richard D. Porter and published by . This book was released on 1987 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Peregrine Falcon Populations written by Joseph J. Hickey and published by . This book was released on 1969 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
