Results 261 to 270 of about 47,477 (297)

Experimental reduction of a primary nest predator fails to decrease nest predation rates of sagebrush songbirds

Ornithological Applications, 2023
Abstract Predator removal comprises one management strategy to increase the reproductive success of a prey species of concern, particularly within human-altered landscapes. The efficacy of such an approach, however, depends partly on the extent to which predation risk is additive or compensatory, which remains unknown for many systems ...
Ashleigh M Rhea, Anna D Chalfoun
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Predation on wader nests in Europe

Ibis, 2008
The population declines of waders in Europe are widely considered to have resulted from habitat loss and degradation due to agricultural changes. However, recent empirical evidence suggests that levels of predation on wader nests are unsustainably high in many cases, even in some situations where breeding habitat is otherwise favourable.
MICHAEL A. MACDONALD, MARK BOLTON
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Predation on Ground-Nesting Birds' Nests in Relation to Predator Densities and Habitat Edge

Oikos, 1986
To study which predators are responsible for nest-losses among ground-nesting birds in boreal forest and how predators utilize different habitats, especially forest/farmland edge, artificial nests were exposed to predators in central Sweden in 1981. A setup which forced nest-robbers to leave foot-prints showed that different avian and mammalian species
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Nest predation and the species diversity of birds

Trends in Ecology & Evolution, 1989
In a recent series of papers, Thomas E. Martin has suggested that selective, density-dependent predation on nests may promote ecological diversification of birds and constrain the number of coexisting species in a community. In an experimental study, Martin has demonstrated density-dependent predation on artificial nests constructed and placed so as to
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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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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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Predation on painted turtle nests: nest survival as a function of nest age

Canadian Journal of Zoology, 1982
This study examined the relationship between nest age and predation rate in painted turtles (Chrysemys picta). Eighty-one intact nests were found; 33 were eventually preyed upon during the study. New nests (less than 72 h old) do not appear to have a greater risk of predation than older nests. The majority (55%) of nests preyed upon were older than 72 
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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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The Pied Currawong's role in avian nest predation: a predator removal experiment

Pacific Conservation Biology, 2001
Pied Currawongs Strepera graculina have been implicated as a major threat to the persistence of small passerines in urban and rural landscapes through their intense nest predation while raising their young. Pied Currawongs have recently increased in abundance and colonized new areas, due to the planting of exotic berry-bearing trees and shrubs.
Fulton, Graham R., Ford, Hugh A.
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