The physiological costs of being colourful: nutritional control of carotenoid utilization in the American goldfinch, Carduelis tristis

  title={The physiological costs of being colourful: nutritional control of carotenoid utilization in the American goldfinch, Carduelis tristis
  author={Kevin J. McGraw and Geoffrey E. Hill and Robert S. Parker},
  journal={Animal Behaviour},

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