References

Allen, P. E. (1996). Breeding biology and natural history of the Bahama Swallow. Wilson Bulletin 108, 480–495.

Ardia, D. R. (2005). Super size me: an experimental test for the factors affecting lipid content and the ability of residual body mass to predict lipid stores in nestling European Starlings. Functional Ecology 19, 414–420.
| CrossRef |

Ardia, D. R., and Clotfelter, E. D. (2007). Individual quality and age affect responses to an energetic constraint in a cavity nesting bird. Behavioral Ecology 18, 259–266.
| CrossRef |

Bryant, D. M. (1975). Breeding biology of House Martins Delichon urbica in relation to aerial insect abundance. Ibis 117, 180–216.
| CrossRef |

Bryant, D. M. (1978). Environmental influences on growth and survival of nestling House Martins Delichon urbica. Ibis 120, 271–283.
| CrossRef |

Crawley, M. J. (2007). ‘The R Book.’ (Wiley: Chichester, UK.)

Edson, J. M. (1943). A study of the Violet-green Swallow. Auk 60, 396–403.

Eeva, T., Lehikoinen, E., Rönkä, M., Lummaa, V., and Currie, D. (2002). Different responses to cold weather in two Pied Flycatcher populations. Ecography 25, 705–713.
| CrossRef |

Lack, D. (1966). ‘Population Studies of Birds.’ (Oxford University Press: Oxford, UK.)

Massoni, V., Bulit, F., and Reboreda, J. C. (2007). Breeding biology of the White-rumped Swallow Tachycineta leucorrhoa in Buenos Aires Province, Argentina. Ibis 149, 10–17.
| CrossRef |

McCarty, J. P. (2001). Variation in growth of nestling Tree Swallows across multiple temporal and spatial scales. Auk 118, 176–190.
| CrossRef |

McCarty, J. P., and Wikler, D. W. (1999). Relative importance of environmental variables in determining the growth of nestling Tree Swallows Tachycineta bicolor. Ibis 141, 286–296.
| CrossRef |

Newbrey, J. L., and Reed, W. L. (2009). Growth of Yellow-headed Blackbird Xanthocephalus xanthocephalus nestlings in relation to maternal body condition, egg mass, and yolk carotenoids concentrations. Journal of Avian Biology 40, 419–429.
| CrossRef |

Price, T., Kirkpatrick, M., and Arnold, S. J. (1988). Directional selection and the evolution of breeding date in birds. Science 240, 798–799.
| CrossRef | CAS |

Quinney, T. E., Hussell, D. J. T., and Ankney, C. D. (1986). Sources of variation in growth of Tree Swallows. Auk 103, 389–400.

R Development Core Team (2009). ‘R: A Language and Environment for Statistical Computing.’ (R Foundation for Statistical Computing: Vienna, Austria.) Available at http://www.R-project.org [Verified 13 June 2011].

Remeš, V., and Martin, T. E. (2002). Environmental influences on the evolution of growth and developmental rates in passerines. Evolution 56, 2505–2518.

Ricklefs, R. E. (1968). Patterns of growth in birds. Ibis 110, 419–451.
| CrossRef |

Ricklefs, R. E. (1976). Growth rates of birds in the humid New World tropics. Ibis 118, 179–207.
| CrossRef |

Winkler, D. W., and Allen, P. E. (1996). The seasonal decline in Tree Swallow clutch size: physiological constraint or strategic adjustment? Ecology 77, 922–932.
| CrossRef |