Tree swallows trade off immune function and reproductive effort differently across their range

@article{Ardia2005TreeST,
  title={Tree swallows trade off immune function and reproductive effort differently across their range},
  author={Daniel R Ardia},
  journal={Ecology},
  year={2005},
  volume={86},
  pages={2040-2046}
}
Latitudinal differences in life histories are believed to be underlain by dif- ferences in trade-offs between current and future reproduction. I report differences in trade- offs between parent and offspring across the range of a widespread avian species, the Tree Swallow (Tachycineta bicolor). I manipulated parental effort and found that in Alaska, where yearly adult return rates are low, breeding females increase their reproductive in- vestment to maintain offspring quality, whereas in… Expand

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