Decreased light intensity alters the perception of day length by male European starlings (Sturnus vulgaris).

@article{Bentley1998DecreasedLI,
  title={Decreased light intensity alters the perception of day length by male European starlings (Sturnus vulgaris).},
  author={George E. Bentley and Arthur R. Goldsmith and A Dawson and Constance Briggs and Mike Pemberton},
  journal={Journal of biological rhythms},
  year={1998},
  volume={13 2},
  pages={148-58}
}
The breeding season of wild starlings is controlled by photoperiod. Full breeding condition is attained during exposure to lengthening days in the spring, and photorefractoriness ensues. The reproductive system of starlings will not subsequently be stimulated by long day lengths until photorefractoriness is dissipated by the short day lengths experienced in the autumn and winter. Unlike most studies on avian photoperiodism, this investigation involved manipulation of light intensity of a fixed… CONTINUE READING

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