Birds of Indian Subcontinent

The Impact of Cottage Development on Common loon Reproductive Success in Central Ontario

Publication Type:Journal Article
Year of Publication:1983
Authors:Heimberger, M, Euler, D, Barr, J
Journal:The Wilson Bulletin
Date Published:1983
ISBN Number:00435643
Keywords:Gavia, Gavia immer, Gaviidae
Abstract:Reproductive success of the Common Loon (Gavia immer) in relation to cottage development was studied from 1977-1979 in central Ontario. Two-egg clutches were significantly more successful than one-egg clutches and loons that initiated incubation early in their breeding season tended to be more successful than those that nested later when the risk of human disturbance was greater. Hatching success declined as the number of cottages within 150 m of the nest increased. Once the eggs had hatched, chick survival appeared to be independent of cottage development around the nest. When human activity near eight nests within 150 m of at least three cottages were compared to eight nests where there was no development, the difference in human activity was highly significant (P < 0.01). It is believed that some loons nesting in developed areas may have become habituated to humans.
Short Title:The Wilson Bulletin
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith