Results 171 to 180 of about 730 (213)

Black‐capped vireo nest predator assemblage and predictors for nest predation

The Journal of Wildlife Management, 2012
AbstractNest predation is a major limiting factor for songbird productivity, including the federally endangered black‐capped vireo (Vireo atricapilla). However, nest predator information is limited across the range of the black‐capped vireo in central and southwest Texas. We monitored nests in 3 counties within the breeding range of black‐capped vireos
Tara J. Conkling, Theresa L. Pope, Kathryn N. Smith, Heather A. Mathewson, Michael L. Morrison, R. Neal Wilkins, James W. Cain   +6 more
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Video monitoring of shrub-nests reveals nest predators

Bird Study, 2004
Capsule Jays Garrulus glandarius are the most common predators, but carnivorous mammals and some other species also predate nests. Aim To uncover the mechanisms and consequences of nest predation. Methods I used video-recording equipment to record the fates of 132 nests of Blackcap Sylvia atricapilla over a three-year period.
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Landscape forest cover and edge effects on songbird nest predation vary by nest predator

Landscape Ecology, 2012
Rates of nest predation for birds vary between and within species across multiple spatial scales, but we have a poor understanding of which predators drive such patterns. We video-monitored nests and identified predators at 120 nests of the Acadian Flycatcher (Empidonax virescens) and the Indigo Bunting (Passerina cyanea) at eight study sites in ...
W. Andrew Cox, Frank R. Thompson, John Faaborg   +2 more
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Ruddy Duck Nesting Success: Do Nest Characteristics Deter Nest Predation?

The Condor, 1999
It has been hypothesized that proximity to edges, timing of nesting, nest concealment or inaccessibility, working singly or in concert, may explain variable nesting success of birds, but results have been mixed. I tested these hypotheses by determining fates and measuring nest-site features of 233 Ruddy Duck (Oxyura jamaicensis) nests near Minnedosa ...
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Preferred nest site characteristics reduce predator‐specific predation risk in a canopy‐nesting raptor

The Journal of Wildlife Management, 2014
ABSTRACTHabitat features influence nest survival and, as a result, identifying relationships between habitat characteristics and nest survival remains a central focus among studies of avian reproduction. In cases where nest predation is the main cause of failure, knowing how the habitat affects predation risk may provide managers with a tangible means ...
Scott J. Chiavacci, Troy J. Bader, James C. Bednarz   +2 more
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Avoid nest predation when predation rates are low, and other lessons: testing the tropical–temperate nest predation paradigm

Oikos, 2010
Nest predation is the most important cause of nest failure in most birds and latitudinal differences in nest predation rates and life histories suggest that nest predation has been influential in life history evolution. All else equal, natural selection should favor reduction of nest predation, yet evidence is equivocal. We used Monte Carlo simulations
James J. Roper, Kimberly A. Sullivan, Robert E. Ricklefs   +2 more
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Identification of Waterfowl Nest Predators

The Journal of Wildlife Management, 1951
Eighteen dead and ill birds which were found on baited plots proved to be affected by insecticide poisoning. One hundred and twenty-two other birds were found dead or affected in baited plots, but the cause of death or illness could not be proved. One muskrat, three skunks, and one field mouse were found dead in the baited plots, but were deteriorated.
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Nest predator abundance and urbanization

2001
We used infra-red triggered cameras, point counts, footprint monitors, and artificial nests baited with quail eggs to investigate the abundance of potential nest predators at 75 sites spread across a gradient of housing density in Franklin County, Tennessee.
David G. Haskell, A. M. Knupp, M. C. Schneider   +2 more
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Nest height, nest concealment, and predator type predict nest predation in superb fairy‐wrens ( Malurus cyaneus )

Ecological Research, 2008
Abstract Three factors and their interaction effects are increasingly recognized as important determinants of nest predation: nest concealment, nest height, and predator type. The risk of nest predation is predicted to vary across these variables because of nest detectability and accessibility. In general, however,
Kleindorfer, Sonia Marie, Colombelli-Negrel, Diane   +1 more
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Merlins as nest predators

1981
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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