Chimney Swift (Chaetura pelagica)

Cink, Calvin L.; Collins, Charles T.

doi:10.2173/tbna.646.p

Cited by 4 publications

(9 citation statements)

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“…10,11,13 The overall St. Adolphe hatching rate (percent of eggs laid that hatched) was 56%, significantly lower (Χ 2 goodness-of-fit, P < 0.0001) than the 90.7% hatching rate reported in 1958 for New York. 1,9,12 The overall fledging rate (percent of eggs that produced fledglings) of 28% is also significantly lower (Χ 2 goodness-of-fit, P < 0.0001) than the 86% reported for New York. 1,9,12 In one season in Kansas, 71% of hatchlings fledged.…”

Section: Discussionmentioning

confidence: 82%

“…1,9,12 The overall fledging rate (percent of eggs that produced fledglings) of 28% is also significantly lower (Χ 2 goodness-of-fit, P < 0.0001) than the 86% reported for New York. 1,9,12 In one season in Kansas, 71% of hatchlings fledged. 1 Using this alternative method of calculation (fledglings/hatchling), St. Adolphe had a 50% fledging rate (11/22) overall and was much lower at Brodeur Bros. (33%; 2/6) than the Main St. site (56%; 9/16).…”

Section: Discussionmentioning

confidence: 82%

“…6,8 Feeding rates of non-brooded juveniles were higher in St. Adolphe compared to chimney swifts nesting at southern latitudes. 6,9,10 Based on behavioural data, St. Adolphe chimney swifts had lower rates of successful nesting attempts and lower numbers of fledglings p r o d u c e d p e r s u c c e s s f u l attempt compared to birds in more southerly portions of the range. 6,9,10,11,12 The St. Adolphe nest sites were monitored through four additional seasons (2010)(2011)(2012)(2013) to increase the size of our data set on breeding success.…”

Section: Birds Nest Site Use Breeding Success and Reproductive Rates Of Chimney Swifts In St Adolphe Mb 2010-2013mentioning

confidence: 99%

“…6,9,10 Based on behavioural data, St. Adolphe chimney swifts had lower rates of successful nesting attempts and lower numbers of fledglings p r o d u c e d p e r s u c c e s s f u l attempt compared to birds in more southerly portions of the range. 6,9,10,11,12 The St. Adolphe nest sites were monitored through four additional seasons (2010)(2011)(2012)(2013) to increase the size of our data set on breeding success. We also used our behavioural observations to assess whether there is variability in feeding rates with respect to weather and prey availability, and other factors associated with nest failures.…”

Section: Birds Nest Site Use Breeding Success and Reproductive Rates Of Chimney Swifts In St Adolphe Mb 2010-2013mentioning

confidence: 99%

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Nest Site Use, Breeding Success, and Reproductive Rates of Chimney Swifts in St. Adolphe, MB, 2010-2013

Stewart¹,

Stewart²

2013

bluejay

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Section: Discussionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 82%

Section: Birds Nest Site Use Breeding Success and Reproductive Rates Of Chimney Swifts In St Adolphe Mb 2010-2013mentioning

confidence: 99%

Section: Birds Nest Site Use Breeding Success and Reproductive Rates Of Chimney Swifts In St Adolphe Mb 2010-2013mentioning

confidence: 99%

See 2 more Smart Citations

Nest Site Use, Breeding Success, and Reproductive Rates of Chimney Swifts in St. Adolphe, MB, 2010-2013

Stewart¹,

Stewart²

2013

bluejay

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“…Despite the diminishment of DDT as a stressor relative to its peak in the 1950s, chimney swift populations have been declining at least since the Breeding Bird Survey was initiated in 1968 [15]. Their population declines are probably a product of the general decrease in relative abundance of Coleoptera from the early 1970s to 1992 (figure 2c), and multiple environmental stressors, ranging from climate change to habitat loss [49,50]. Although reduced populations should result in the benefit of greater resource availability per bird, this does not seem to be the case for chimney swifts as their population decline continued unabated.…”

Section: Discussionmentioning

confidence: 99%

Historical pesticide applications coincided with an altered diet of aerially foraging insectivorous chimney swifts

et al. 2012

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Numerous environmental pressures have precipitated long-term population reductions of many insect species. Population declines in aerially foraging insectivorous birds have also been detected, but the cause remains unknown partly because of a dearth of long-term monitoring data on avian diets. Chimney swifts (Chaetura pelagica) are a model aerial insectivore to fill such information gaps because their roosting behaviour makes them easy to sample in large numbers over long time periods. We report a 48-year-long (1944 -1992) dietary record for the chimney swift, determined from a well-preserved deposit of guano and egested insect remains in Ontario (Canada). This unique archive of palaeo-environmental data reflecting past chimney swift diets revealed a steep rise in dichlorodiphenyltrichloroethane (DDT) and metabolites, which were correlated with a decrease in Coleoptera remains and an increase in Hemiptera remains, indicating a significant change in chimney swift prey. We argue that DDT applications decimated Coleoptera populations and dramatically altered insect community structure by the 1960s, triggering nutritional consequences for swifts and other aerial insectivores.

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Multiscale habitat suitability index models for priority landbirds in the Central Hardwoods and West Gulf Coastal Plain/Ouachitas Bird Conservation Regions

Tirpak¹,

Jones-Farrand²,

Thompson³

et al. 2009

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Ecoregional conservation planning for priority landbirds requires methods that explicitly link populations to habitat conditions at multiple scales. We developed Habitat Suitability Index (HSI) models to assess habitat quality for 40 priority bird species in the Central Hardwoods and West Gulf Coastal Plain/Ouachitas Bird Conservation Regions. The models incorporated both site and landscape environmental variables derived from one of six nationally consistent datasets: ecological subsections from the National Ecological Unit Hierarchy, National Land Cover Dataset, National Elevation Dataset, National Hydrography Dataset, State Soil Geographic Database, and Forest Inventory and Analysis data. We initially defi ned potential habitat for each species from unique landform, landcover, and successional age class combinations. Species-specifi c environmental variables identifi ed from the literature were used to refi ne initial habitat estimates. We verifi ed models by comparing subsection-level HSI scores and Breeding Bird Survey (BBS) abundance via Spearman rank correlation. To validate models, we developed generalized linear models that predicted BBS abundance as a function of HSI score and Bird Conservation Region. We considered models that included a signifi cant (P ≤ 0.100) positive coefficient on the BBS predictor to be valid and useful for conservation planning.

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Chimney Swift (Chaetura pelagica)

Cited by 4 publications

References 0 publications

Nest Site Use, Breeding Success, and Reproductive Rates of Chimney Swifts in St. Adolphe, MB, 2010-2013

Nest Site Use, Breeding Success, and Reproductive Rates of Chimney Swifts in St. Adolphe, MB, 2010-2013

Historical pesticide applications coincided with an altered diet of aerially foraging insectivorous chimney swifts

Multiscale habitat suitability index models for priority landbirds in the Central Hardwoods and West Gulf Coastal Plain/Ouachitas Bird Conservation Regions

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