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1 October 2003 Time-lapse video system used to study nesting Gyrfalcons
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Abstract

We used solar-powered time-lapse video photography to document nesting Gyrfalcon (Falco rusticolus) food habits in central West Greenland from May to July in 2000 and 2001. We collected 2677.25 h of videotape from three nests, representing 94, 87, and 49% of the nestling period at each nest. The video recorded 921 deliveries of 832 prey items. We placed 95% of the items into prey categories. The image quality was good but did not reveal enough detail to identify most passerines to species. We found no evidence that Gyrfalcons were negatively affected by the video system after the initial camera set-up. The video system experienced some mechanical problems but proved reliable. The system likely can be used to effectively document the food habits and nesting behavior of other birds, especially those delivering large prey to a nest or other frequently used site.

Travis L. Booms and Mark R. Fuller "Time-lapse video system used to study nesting Gyrfalcons," Journal of Field Ornithology 74(4), 416-422, (1 October 2003). https://doi.org/10.1648/0273-8570-74.4.416
Received: 3 July 2002; Accepted: 1 January 2003; Published: 1 October 2003
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