Understanding nest success and brood parasitism in the endangered Black-capped Vireo: comparisons with two sympatric songbirds

2013 ◽  
Vol 125 (4) ◽  
pp. 709-719 ◽  
Author(s):  
Andrew J. Campomizzi ◽  
Heather A. Mathewson ◽  
Michael L. Morrison ◽  
Christopher M. Lituma ◽  
Tara J. Conkling ◽  
...  
Keyword(s):  
Brood Parasitism ◽  
Nest Success

scholarly journals Effect of Conspecific Brood Parasitism on Host Fitness for Tufted Duck and Common Pochard

The Auk ◽  
2001 ◽  
Vol 118 (3) ◽  
pp. 717-726 ◽  
Author(s):  
Bruce D. Dugger ◽  
Peter Blums
Keyword(s):  
Brood Parasitism ◽  
Nest Success ◽  
Adult Survival ◽  
Conspecific Brood Parasitism ◽  
Data Set ◽  
Egg Hatch ◽  
Tufted Duck ◽  
Negative Effect ◽  
Hatch Success ◽  
Common Pochard

Abstract Brood parasitism occurs disproportionately in birds with precocial young and is particularly common in Anseriformes. In part, that pattern may result because precocial hosts, relative to altricial species, incur relatively few costs when caring for precocial eggs. Empirical data do not consistently support that hypothesis, and some parameters have not been adequately compared between parasitized and nonparasitized nests or females. We used a combination of experimentation (egg and duckling additions) and analysis of a larger observational data set to compare reproductive parameters, recruitment, and adult survival between parasitized and nonparasitized female Common Pochard (Aythya ferina) and Tufted Ducks (A. fuligula). Addition of three eggs to nests during the host's laying cycle had no effect on host clutch size, host egg hatch success, or nest success for either species. Nest success was not affected by parasitism intensity for pochards, but we did detect a small drop in nest success for Tufted Duck nests parasitized with >6 eggs. Recruitment probability did not differ between parasitized and nonparasitized nests for either species, and parasitism had no negative effect on adult survival. Between-year nest initiation dates were later for parasitized Tufted Ducks, although the biological consequences of that difference (3.8 days) seem negligible. Moderate levels of parasitism do not negatively affect hosts for these two species.

scholarly journals Nesting Success of Acadian Flycatchers (Empidonax Virescens) in Floodplain Forest Corridors

The Auk ◽  
2007 ◽  
Vol 124 (4) ◽  
pp. 1267-1280
Author(s):  
Leonardo Chapa-Vargas ◽  
Scott K. Robinson
Keyword(s):  
Brood Parasitism ◽  
Nest Success ◽  
River System ◽  
Floodplain Forest ◽  
Breeding Cycle ◽  
Cache River ◽  
Forest Patches ◽  
Empidonax Virescens ◽  
Forest Corridors ◽  
Acadian Flycatcher

Abstract Reconnecting forest patches, including those of floodplain forest, often involves the creation of long, narrow corridors that have the potential to act as ecological traps for wildlife. We examined the effect of forest width and habitat composition of the landscapes immediately around nest patches on survival and parasitism of 359 Acadian Flycatcher (Empidonax virescens) nests in the Cache River Bioreserve in southern Illinois. Nests were distributed among 19 floodplain forest corridors along a small river system that is being restored and reconnected along its original floodplain. The corridors spanned a range of widths (80–3,170 m) and varied with the presence or absence of natural water-related habitats (beaver ponds, backwater swamps, and creeks). Although nest success varied slightly between stages of the breeding cycle, confidence intervals overlapped, which suggests constant nest success throughout the breeding cycle. Nest survival was relatively high by regional standards but did not vary significantly with any of the landscape variables measured. Contrary to predictions, probabilities of brood parasitism decreased with increasing proportions of anthropogenic habitats surrounding nests. Probabilities of brood parasitism also decreased, but only slightly, as the breeding season progressed. Finally, Acadian Flycatcher nests were located significantly more often near natural (forest-water interface) edges than expected at random. Narrow corridors such as those along floodplain restoration projects do not necessarily create ecological traps for all forest species. Acadian Flycathcers, however, are one of the only forest-nesting Neotropical migrants that nest in narrow corridors and, therefore, may be less vulnerable to negative effects of fragmentation. Éxito de Nidificación de Empidonax virescens en Corredores de Bosque de Planicies Inundables

Identifying predators clarifies predictors of nest success in a temperate passerine

2010 ◽  
Vol 79 (1) ◽  
pp. 225-234 ◽  
Author(s):  
Thomas J. Benson ◽  
Jeremy D. Brown ◽  
James C. Bednarz
Keyword(s):  
Nest Success
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