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Influence of Alternate Host Densities on Brown-Headed Cowbird Parasitism Rates in Black-Capped Vireos
Brown-headed Cowbird (Molothrus ater) parasitism is thought to be partly influenced by density of the host species, although tests of host density are relatively rare. We examined parasitism ratesExpand
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Migration path annotation: cross-continental study of migration-flight response to environmental conditions.
Understanding the movements of animals is pivotal for understanding their ecology and predicting their survival in the face of rapid global changes to climate, land use, and habitats, thusExpand
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Efficacy of Migration Counts for Monitoring Continental Populations of Raptors: An Example using the Osprey (Pandion haliaetus)
ABSTRACT. Recent research has confirmed the efficacy of migration monitoring to estimate trends in the populations of raptors sampled at traditional watch-sites. We used autumn satellite tracks ofExpand
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Nesting success of birds in different silvicultural treatments in southeastern U.S. Pine Forests
: We examined nesting success and levels of nest predation and cowbird parasitism among five different silvicultural treatments: regenerating (3–6 years old  ), mid-rotation (12–15 years old ), andExpand
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Laboratory studies of the food preferences of some orchard carabids (Coleoptera: Carabidae).
Laboratory studies of the food preferences of several adult carabids showed that Amara aenea DeG., Anisodactylus sanctaecrucis F., Harpalus affinis Schr., and Stenolophus comma F. were polyphagousExpand
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What Banding Tells Us About the Movement Ecology of Raptors
Abstract We examined banding encounter records from 1920 to 2006 for three raptors that are commonly banded in North America: American Kestrel (Falco sparverius, 4707 encounters), Sharp-shinned HawkExpand
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Seasonal micro-migration in a farm-island population of striated caracaras (Phalcoboenus australis) in the Falkland Islands
BackgroundThe extent to which seasonal changes in food availability affect small-scale movements in free-ranging populations of birds of prey is relatively little studied. Here we describe a seasonalExpand
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A long-term database on raptor migration at Hawk Mountain Sanctuary, northeastern United States
In most northern temperate regions diurnal birds of prey, or raptors, migrate seasonally between their breeding and wintering grounds. Although their populations can be logistically difficult toExpand
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