Glucocorticoid response to food availability in breeding barn swallows (Hirundo rustica).

  title={Glucocorticoid response to food availability in breeding barn swallows (Hirundo rustica).},
  author={Susanne Jenni-Eiermann and Esther Glaus and Martin U. Gr{\"u}ebler and Hubert G. Schwabl and L. F. Jenni},
  journal={General and comparative endocrinology},
  volume={155 3},
Parents feeding altricial nestlings have to trade-off the competing demands of self-maintenance and reproductive investment over their lifetime. Corticosterone, a glucocorticoid hormone released by birds in response to stressors, might play a key role in regulating parental investment when conditions unexpectedly deteriorate. However, birds breeding in unpredictable environmental conditions have been shown not to increase circulating levels of corticosterone as a response to bad weather to… CONTINUE READING


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