Results 161 to 170 of about 1,651,582 (192)
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NEST-SITE SELECTION AND NEST SURVIVAL OF NORTHERN BOBWHITE IN SOUTHERN TEXAS
The Wilson Journal of Ornithology, 2007Abstract We examined abiotic and biotic variables potentially associated with Northern Bobwhite (Colinus virginianus) nest-site selection and nest success in southern Texas, USA during 2002–2005. These data were used to characterize bobwhite nest-site selection, and to develop and evaluate models of daily nest survival in Program MARK.
MICHAEL J. RADER +4 more
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Adaptive nest clustering and density‐dependent nest survival in dabbling ducks
Oikos, 2013Density‐dependent population regulation is observed in many taxa, and understanding the mechanisms that generate density dependence is especially important for the conservation of heavily‐managed species. In one such system, North American waterfowl, density dependence is often observed at continental scales, and nest predation has long been implicated
Kevin M. Ringelman +2 more
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Handling of uncertain nest fates and variation in nest survival estimates
Journal of Ornithology, 2007Researchers are moving their attention away from the Mayfield method of estimating nest success to advanced nest survival models that can be implemented within statistical software packages. In spite of this, little attention has been paid to developing formal rules for handling of ambiguous nesting data within these software-based methods.
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Waterbird Nest Density and Nest Survival in Rice Fields of Southwestern Louisiana
Waterbirds, 2010Abstract. Rice fields in southwestern Louisiana provide breeding habitat for several waterbird species; however, little is known about nest density, nest survival and the importance of landscape context of rice fields in determining breeding activity. In 2004, 42 rice fields were searched for nests, and 40 were searched in 2005.
Sergio Pierluissi +2 more
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Estimating occupancy and nest survival of cliff‐nesting raptors in an open population framework
Ecological ApplicationsAbstractNest survival is a key demographic parameter for assessing the viability of bird populations and is frequently responsive to management. While nest survival is often monitored alone, its joint monitoring with abundance permits a more thorough understanding of breeding productivity and the mechanisms of population change.
Jeremy D. Mizel, Melanie J. Flamme
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Personality and density affect nest defence and nest survival in the great tit
acta ethologica, 2014Recent studies suggest that individual variation in behaviour of prey individuals may cause distinctive responses to nest predators and cooperation with conspecifics. We assessed individual differences during a novel object test and whether these responses were related to nest failure and survival of females during incubation.
Vrublevska, J +5 more
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Effects of Adult Behavior and Nest-Site Characteristics on Black-capped Vireo Nest Survival
The Condor, 2013Abstract. Predation is the leading cause of nest failure for many bird species. Most studies associate risk of predation with vegetation characteristics of the nest site. Alternatively, the Skutch hypothesis suggests that adults' activity at the nest can attract the attention of predators and lead to an increased risk of predation.
Pope, TL +5 more
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The Auk, 2008
Abstract The disturbance associated with nest monitoring raises concerns about the validity of the estimated nest success and the well-being of the populations under study. Observer activity may attract or deter predators to or from bird nests, thus decreasing or increasing nest success.
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Abstract The disturbance associated with nest monitoring raises concerns about the validity of the estimated nest success and the well-being of the populations under study. Observer activity may attract or deter predators to or from bird nests, thus decreasing or increasing nest success.
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Ibis
Reproductive success is an important component of life history and population ecology, influenced by factors intrinsic and extrinsic to organisms. In birds, where nest predation is the primary cause of reproductive failure, parent behaviours (e.g. nest visits) can increase nest detection and failure by attracting the attention of predators, but they ...
Facundo G. Di Sallo, Kristina L. Cockle
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Reproductive success is an important component of life history and population ecology, influenced by factors intrinsic and extrinsic to organisms. In birds, where nest predation is the primary cause of reproductive failure, parent behaviours (e.g. nest visits) can increase nest detection and failure by attracting the attention of predators, but they ...
Facundo G. Di Sallo, Kristina L. Cockle
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Observations on Nest Site Selection, Nest Desertion, and Embryonic Survival in Marbled Salamanders
Journal of Herpetology, 1990Data on the nesting biology of marbled salamanders (Ambystoma opacum) were obtained on 292 nests from 11 temporary pools in central North Carolina. About 6% of the nests were communal and contained eggs from two or three females. Each of the remaining nests contained a single clutch of eggs. Females placed nests primarily at moderate to high elevations
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