The effect of food abundance on the reproductive patterns of coots
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Published source details
Hill W.L. (1988) The effect of food abundance on the reproductive patterns of coots. The Condor, 90, 324-331.
Published source details Hill W.L. (1988) The effect of food abundance on the reproductive patterns of coots. The Condor, 90, 324-331.
Actions
This study is summarised as evidence for the following.
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Provide supplementary food for rails and coots to increase reproductive success Action Link |
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Provide supplementary food for rails and coots to increase reproductive success
A small randomised and controlled trial on a lake in Washington State, USA, in 1982 (Hill 1988), found that American coots Fulica americana from three territories given supplementary food (1 kg of dog food provided three times a week in each experimental territory) laid heavier eggs than coots from four control (unfed) territories (30 g/egg for fed birds vs. 28 g/egg for controls), but that there was no consistent effect on clutch size (first laid clutches: 8 eggs/clutch for fed territories vs. 9 eggs/clutch for controls; when including replacement clutched: 8.7 eggs/clutch vs. 9.0 eggs/clutch).
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