Variations in the Reproductive Activities of Arctic Terns at Churchill, Manitoba

Nest locations and contents were observed in 16 colonies over a 3-year period. Laying times correlated with spring temperatures, but not with colony size. Clutch size increased with time between ice breakup and laying onset. Egg losses were insufficient to account for differences in clutch size. The...

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Bibliographic Details
Published in:ARCTIC
Main Authors: Evans, Roger M., McNicholl, Martin K.
Format: Article in Journal/Newspaper
Language:English
Published: The Arctic Institute of North America 1972
Subjects:
Icebreaking
Ice pressure
Ice-structure interaction
Louis S. St. Laurent (Ship)
Manhattan (Ship)
Marine transportation
Pressure ridges
Sea ice
Winds
Baffin Bay-Davis Strait
Arctic
Baffin Bay
Arctic tern
Baffin
Churchill
Davis Strait
Online Access:https://journalhosting.ucalgary.ca/index.php/arctic/article/view/66004
Description
Summary:Nest locations and contents were observed in 16 colonies over a 3-year period. Laying times correlated with spring temperatures, but not with colony size. Clutch size increased with time between ice breakup and laying onset. Egg losses were insufficient to account for differences in clutch size. The results are taken to indicate that under arctic conditions, variations in clutch size, timing of the nesting cycle, and associated events in the Arctic Tern are closely related to variations in the physical environment.

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