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    A dynamic model of hypothermia as an adaptive response by small birds to winter conditions
    with A. I. Houston, J. Ekman, and J. M. McNamara
    Acta Biotheoretica 50 (1): 39-56. 2002.
    We present a dynamic programming model which is used to investigate hypothermia as an adaptive response by small passerine birds in winter. The model predicts that there is a threshold function of reserves during the night, below which it is optimal to enter hypothermia, and above which it is optimal to rest. This threshold function decreases during the night, with a particularly sharp drop at the end of the night, representing the time and energy costs associated with returning to normal body t…Read more