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Journal of comparative physiology

, Volume 89, Issue 4, pp 321–330 | Cite as

Daily energetics of the Black-capped Chickadee,Parus atricapillus, in winter

  • Susan Budd Chaplin
Article

Summary

The Black-capped Chickadee,Parus atricapillus, is a year-round resident of deciduous forests near Ithaca, New York. Chickadees are confronted with high nightly energetic demands, due to their small size (10–12 g) and the subfreezing winter temperatures, which must be met by an adequate energy reserve. The fat stores of Chickadees on midwinter evenings provide slightly more energy then expended overnight, as based on metabolic measurements made in the laboratory.

The Chickadee has a much lower metabolic expenditure overnight than would be predicted for a bird of its size. This is accomplished by regulating nocturnal body temperatures 10–12 °C below normal diurnal body temperature (42 °C). When exposed to 0 °C overnight, Chickadees reduce their hourly metabolic expenditure by 23%.

The nocturnal energetics of the insectivorous Black-capped Chickadee and the granivorous Common Redpoll are compared to illustrate two different strategies for winter residence in the north temperate zone.

Keywords

Body Temperature Temperate Zone Deciduous Forest Winter Temperature Energy Reserve 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1974

Authors and Affiliations

  • Susan Budd Chaplin
    • 1
  1. 1.Section of Ecology and SystematicsCornell University IthacaNew York

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