The effect of food abundance on the reproductive patterns of coots


This study is summarised as evidence for the following.

Action Category

Provide supplementary food for rails and coots to increase reproductive success

Action Link
Bird Conservation
  1. 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).


Output references
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