Nocturnal behaviour of ring-billed gulls during the early incubation period
- 1 June 1979
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Zoology
- Vol. 57 (6) , 1190-1195
- https://doi.org/10.1139/z79-151
Abstract
Observations of ring-billed gull behaviour on Mugg's Island, Toronto Harbour, in 1978 demonstrated that behaviour at night was much less aggressive and more sexual than during the day. The differences were probably caused by reduced visual discrimination and increased fear within the gulls at night. The evolutionary causes and consequences of the behavioural differences are discussed with reference to the temporal and spatial patterns of nesting in ring-bills.This publication has 1 reference indexed in Scilit: