Reproductive Performance of Ring-Billed Gulls in Relation to Nest Location
Ryder PL and Ryder JP. 1981. Reproductive Performance of Ring-Billed Gulls in Relation to Nest Location. The Condor. 83(1):57-60
We evaluated the reproductive performance of Ring-billed Gulls (Larus delawarensis) nesting on the periphery and in the center of a colony in northern Lake Superior in 1976 and 1977. The center and periphery of this colony were not subject to flooding, predation or differential human disturbance. Egg-laying, clutch size, hatching and fledging success, and nest attentiveness did not differ significantly between peripheral and central clutches. The colony population has increased in size during the last five years and become stabilized, whereby peripheral and central areas are now being occupied simultaneously. In this study, reproductive performance was related more to the timing than the location of nesting.
- Type
- Journal Article
- Authors
- Ryder, Patricia; Ryder, John
- Units
- ISRO
- Keywords
- Animal Studies, gulls (Larinae), Nests & Nesting, Reproduction, Ring-billed gull(Larus delawarensis)