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carried out much research into regulation of clutch size. In species with altricial young, he proposed that optimal clutch size was determined by the number of young a parent could feed until fledgling. In precocial birds, Lack determined that clutch size was determined by the nutrients available to
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variation can also reflect variation in optimal reproduction effort. In birds, clutch size can vary within a species due to various features (age and health of laying female, ability of male to supply food, and abundance of prey), while some species are determinant layers, laying a species-specific
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Leach, A. G.; van Dellen, A. W.; Riecke, T. V.; Sedinger, J. S. (2017). "Incubation capacity contributes to constraints on maximal clutch size in Brent Geese
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number of eggs. Long-lived species tend to have smaller clutch sizes than short-lived species (see also
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Lack, D. (1947). "The significance of clutch-size, parts I and II".
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egg-laying females. An experimental study in black brent geese (
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112:David Lack
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25:sea turtle
346:: 302-352
60:predators
303:See also
49:reptiles
139:Mallard
125:Gallery
92:habitat
88:species
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33:clutch
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420:Birds
84:genus
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389:Ibis
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74:Size
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