Natal Dispersal of Peregrine Falcons in Greenland

Restani, Marco; Mattox, William G.

doi:10.1093/auk/117.2.500

Cited by 7 publications

(7 citation statements)

References 14 publications

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“…Current research on DOE in Peregrines in Greenland, from plasma samples collected from adult females in 1985 in southern Greenland and 1983-89 (2006) found that eggshells over that period increased in thickness by an average of 0.19% per year. These findings correspond well with what has been reported as a "stable" Kangerlussuaq Peregrine population from 1972 to 1982 by Burnham & Mattox (1984) and later an increasing population, reported by Mattox & Seegar (1988), Restani & Mattox (2000), and Wightman (2001). Increases in Peregrine populations have also occurred in other parts of the western Arctic, some exponentially, with doubling times of five to seven years (Shank et al 1993).…”

Section: Ddt /Ode Impactssupporting

confidence: 88%

“…The density of Peregrines in the Pituffik area appears to be much lower than those found by Restani & Mattox (2000) and Falk & M0ller (1988Falk & M0ller ( , 2005 for Kangerlussuaq and South Greenland areas, respectively. Even if an occasional nest was missed, this still represents a relatively low density of breeding Peregrines.…”

Section: Densitycontrasting

confidence: 51%

“…The Pituffik (76.5° N) and Kangerlussuaq (67° N) study areas and the Pituffik and the South Greenland (60.5-61.0° N) study areas are separated by approximately 1,100 km and 9° oflatitude, and by 1,700 km and 16° oflatitude, respectively. In the Kangerlussuaq area, the longest recorded natal dispersal for a female was 690 km, to the southern study area (Restani & Mattox 2000). In Alaska a male dispersed 370 km (Abrose & Riddle 1988) and, from captive-bred and released Peregrines in the Midwestern United States, one male dispersed 1,520 km and a female 1,760 km (Tordoff & Redig 1997).…”

Section: Range Expansionmentioning

confidence: 98%

“…The weather is more stable than in the Pituffik area and warmer during the spring and summer months. Small passerines occur in abundance during the summer months and form the primary prey base for breeding Peregrines (Restani & Mattox 2000). Rock Ptarmigan Lagopus mutus are also present and utilized by Peregrines along with shorebirds and waterfowl.…”

Section: Boundary Lines Of the Low And Highmentioning

confidence: 99%

“…From 1983 to 1996, of259 adult females marked, 196 were at the same nest in the following year and 12 were at different nests (Mattox & Seegar 1996). Considering these facts, and increased population density and high reproductive rate, Peregrine reproduction likely exceeds mortality (Mattox & Seegar 1988, Restani & Mattox 2000. While placing PTTs on seven adult females at the nest, in all cases during the 50-75 minute period required, extra females were seen at each nesting cliff Additionally, as determined by using mtDNA, in one instance an incubating adult female was shown not to be the genetic mother of young later raised.…”

Section: Carrying Capacitymentioning

confidence: 99%

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The history and range expansion of peregrine falcons in the Thule area, Northwest Greenland

Burnham,

Newton

et al. 2012

Meddr Grønland. Biosci

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Peregrine Falcons, Falco peregrinus tundrius, were historically unknown to Inuit and early explorers in the Pituffik (Thule) area, northwest Greenland (75.90-77.60° N). Here we provide information collected from 1993-2005 on what we believe is a recently established and expanding population of High Arctic nesting Peregrines in the area associated with climate change. From 1979 to 2005, the average of the mean monthly temperature, minimum monthly temperature, and maximum monthly temperature for the five-month period, May through September, increased 1.1, 0.5, and 1.6 °C, respectively. Forty-one breeding attempts were recorded at six sites from 1993 to 2005 for this new population. Satellite transmitters were used to determine the home ranges and seasonal movements of female Peregrines, with adults traveling an average of 10,794 km at a rate of 205 km/day on outward migration. During outward migration, the maximum distance traveled by any female on one day was 1,349 km with the maximum total outward and return migrations for single individuals 12,438 and 11,071 km, respectively, to and from South America. Comparisons with Peregrine populations in Greenland at 67° N and 60.5° N, approximately 1,100 (Kangerlussuaq) and 1,700 (South Greenland) km south of the Pituffik area, respectively, show differences in various aspects of ecology. Based on a lack of both morphological and genetic differences it appears the Pituffik area population is likely a result of the extension of more southern breeding Peregrines moving north and taking advantage of an ameliorating climate and lengthened breeding window. Should climatic amelioration continue, the species may eventually expand its range into the very northernmost land area, Peary Land.

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Section: Ddt /Ode Impactssupporting

confidence: 88%

Section: Densitycontrasting

confidence: 51%