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Showing 1 to 20 of 46 for “"nest-site selection"”.
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Nest-site selection by Sharp-shinned Hawks in Kentucky
… breeding biology, including their preferred nesting habitat. In 2009 and 2010, I searched 248 forest stands in Kentucky and found 11 nests, all located in pines (Pinus spp.). Nests were at a mean height of 18.6 ± 1.4 m in trees with a mean height of 23.7 m and mean dbh of 38.2 cm. Nests were …
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Burrowing Owl Distribution and Nest Site Selection in Western South Dakota
… west of the Missouri River, where it usually nests in black-tailed prairie dog (Cynomys ludovicianus) colonies. Information about the burrowing owl’s current range and habitat needs in South Dakota is necessary to maintain the species as a relatively common component of the state’s avifauna. …
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Behavior, Nest Site Selection and Success of Black Terns (Chlidonias niger)
… of which are still largely unknown. I monitored nest success and wetland use by Black Terns in three colony sites in northern Michigan throughout 2017 and 2018 and used traditional survey methods coupled with nest cameras to document Black Tern nest success and mortality events. Colony sites …
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Nest site selection by common eiders : relationships with habitat features, microclimate and incubation success
Habitat selection theory presumes that organisms are not distributed randomly in their environments because of habitat-specific differences in reproductive success and survival; unfortunately, many previous studies were either unable or failed to look for evidence of processes shaping nest site …
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Factors affecting piping plover (Charadrius melodus) nest site selection following landscape and predator community changes
… and human interventions significantly impact nesting habitat use by species like the piping plover (Charadrius melodus) along Atlantic coastlines. Our study focused on Fire Island, New York, assessing changes in vegetation succession, plover nesting habitat selection, and suitable nesting …
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Gopher tortoise nest-site selection at burrows and the influence of nest environment on hatching success
Nesting and early life is a period of high mortality for many turtle species, so understanding how turtles select nest sites, and how those nest sites impact hatching success, may be important for successful species conservation. In this research, my objective was to 1) understand how the …
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Tree cavity abundance and nest site selection of cavity nesting birds in a natural boreal forest of West Khentey, Mongolia
… angelegte Höhlen, Astlöcher oder Rindenspalten. Nester aller höhlenbrütenden Vogelarten wurden in 2002 und 2003 gesucht. Für jeden Baumstamm mit Bruthöhle wurden Baumart, BHD, Vitalität und das Vorhandensein von Feuerschäden und Pilzkonsolen erfasst. Ebenso wurden Höhlentyp, Höhe der Bruthöhle …
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Nest-site selection, nocturnal nest desertion, and productivity in a common tern (<i>sterna hirundo</i>) colony at Detroit River, Michigan
… that of eastern North America. On an artificial site, I studied the substrate and vegetation preference and productivity of nesting terns at two scales: general habitat and nest-site. Terns nested later and less successfully in large river rock (13 to 25-cm diameter) compared to more diverse …
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Northern pintail nest site selection, nest success, renesting ecology and survival in the intensively farmed prairies of southern Saskatchewan: an evaluation of the ecological trap hypothesis
Unlike most prairie nesting ducks (Anas spp.), the North American population of northern pintails (A. acuta, hereafter pintails) has failed to respond as expected to improved wetland conditions on the U.S. and Canadian prairies during the mid to late 1990s. My primary objectives were to test the …
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Demography, Nest Site Selection, and Physiological and Behavioral Responses to Overflights and other Human Activities, of Wilson's Plover (Charadrius wilsonia) at Cape Lookout National Seashore, North Carolina
… decline. I studied Wilson's Plover demography, nest site selection, and physiological and behavioral responses to overflights at Cape Lookout National Seashore, North Carolina, where the National Park Service and U.S. Marine Corps recently lowered the altitude for overflights at tactical speeds. …
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Nest predation and habitat selection in the grasshopper sparrow (Ammodramus savannarum)
Predation is the leading cause of nest failure for many birds and is an important source of natural selection that shapes avian behavior and life-history traits. However, our understanding of the relationship between habitat characteristics and nest loss and how predation affects nest-site …
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Raptors in Temperate Grasslands: Ecology of Ferruginous Hawk, Golden Eagle, and Northern Harrier in the Northern Great Plains
… are a grassland and shrubland obligate nesting raptor and prefer lightly grazed pasture or idle areas for nesting. Their population reportedly declines in number if more than 30% of an area is cultivated and they rarely nest in areas dominated by croplands. Golden eagles (<em>Aquila …
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Do wetland characteristics, specifically plant communities, surface water, and soils play a significant role in whooping crane (<i>grus americana</i>) site selection?
… on Whooping crane (<em>Grus americana</em>) nest site selection; wetland soils, plant community structure and surface water quality were analyzed throughout nineteen established nest sites and twenty non-nesting wetland sites. Due to past fire management throughout the refuge, the effects of …
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Fantastic Birds and Where to Find Them
… and used to locate new long-term monitoring sites, and acquire new protected areas. Unlike the migratory western Willow Flycatchers, The Nicaraguan Grackle is a residential (non-migratory) bird that occupies more open wetlands and riparian areas around the Nicaraguan great lakes and the Caño …
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Bird Community Structure in Southwestern Missouri
… were also conducted in each area during the nesting season. Overall bird species diversity (BSD) was highest in the cedar plot. Breeding bird diversity (BBD) was also highest in the cedar plot as cedar trees provided a greater number of nest sites. Nests built in cedar trees were analyzed to …
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Woodpecker Nesting Habitat in a Prairie River Woodland
<p>Differences in nest site selection of the common flicker (Colaptes auratus), yellow-bellied sapsucker (Sphyrapicus varius), downy woodpecker (Picoides pubescens), and red-headed woodpecker (Melanerpes erythrocephalus) were studied on the Big Sioux River riparian forest of eastern South Dakota …
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Factors Affecting Natal Dispersal by Song Wrens (Cyphorhinus Phaeocephalus): Ecological Constraints and Demography
… central Panama. First, I documented patterns of nest site selection and components of breeding productivity. I describe nest predation rates, between-brood intervals, timing and length of breeding season, clutch size, and annual rates of production of young. I then compared the components of …
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Breeding Bird Response to Post Oak Savanna Restoration Seven Years Post Management In Eastern Texas
… characteristics, breeding bird abundances, nest success, and nest site selection at the Gus Engeling Wildlife Management Area (GEWMA) in eastern Texas. The results showed a lack of savanna vegetation structure on degraded sites and few savanna or grassland obligate bird species. The goal of …
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