The breeding success of the Indian Cattle Egret Ardeola ibis in eastern Australia
- 1 October 1985
- Vol. 127 (4) , 530-536
- https://doi.org/10.1111/j.1474-919x.1985.tb04848.x
Abstract
Over a three year study the Cattle Egret's mean clutch size was 3.6 eggs and 81% of nests with eggs produced one or more fledglings. Breeding success averaged 2.1 chicks to fledgling stage, and between 1.5 and 1 8 fledged per nesting pair. These data illustrate the breeding performance of a population in an expansion phase of its history. The determinants of growth of immigrant Cattle Egret populations are sought in a comparison of its breeding parameters in different lands. A significant reduction in clutch size occurred after about two‐thirds of clutches had been laid each year. One‐year‐old birds nesting for the first time are implicated in this reduction.This publication has 10 references indexed in Scilit:
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