Local movements of color-marked common loons
Article Abstract:
A new study investigates the local movements of common loons to assess the frequency, ecological causes and timing of multiple-lake usage. The investigation of color-marked birds in Northern Wisconsin and the Upper Peninsula of Michigan shows five different classes of multi-lake usage: territorial defensive movement, long-distance movement by young birds, post-reproductive wandering, pre-breeding territory shifts and dispersal of displaced breeders. It is suggested that a management strategy that preserves only the lakes on which loons nest may not ensure successful nesting.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1997
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Territory acquisition in loons: The importance of take-over
Article Abstract:
Patterns of territory acquisition in common loons, Gavia immer, were examined, and 41.5% occurred through passive occupation. 17% founded new territories and 41.5% either usurped or appropriated territories. Individuals were found to act alone and displaced breeders took refuge on lakes close to former territories.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 2000
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Does prey biomass or mercury exposure affect loon chick survival in Wisconsin?
Article Abstract:
Mechanisms of Hg excretion that might allow young chicks to survive on acidic lakes in northern Wisconsin despite high Hg intake are discussed. Suggestions reveal that loon chick survival in northern Wisconsin lakes is more likely related to prey availability than to Hg exposure.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 2005
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