THE SEASONAL DECLINE IN TREE SWALLOW CLUTCH SIZE: PHYSIOLOGICAL CONSTRAINT OR STRATEGIC ADJUSTMENT?'

@article{Winkler1996THESD,
  title={THE SEASONAL DECLINE IN TREE SWALLOW CLUTCH SIZE: PHYSIOLOGICAL CONSTRAINT OR STRATEGIC ADJUSTMENT?'},
  author={David W. Winkler and Paul E. Allen},
  journal={Ecology},
  year={1996},
  volume={77},
  pages={922-932}
}
The seasonal decline in clutch size has been explained as being due to either: (1) a constraining effect of female condition on both laying date and clutch size; or (2) a seasonal decline in the prospects of chick recruitment, leading to a strategic decrease in clutch size with laying date. In an effort to shed light on this area of disagreement, we analyzed the physiological condition (as measured by body mass, breast muscle thickness, and fat stores) and body size (as measured by wing and… Expand
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