[obol] On pelagic Gyrfalcons
- From: "Jenkins, Maurice A." <alanjenkins@xxxxxx>
- To: "obol@xxxxxxxxxxxxx" <obol@xxxxxxxxxxxxx>
- Date: Wed, 22 Oct 2014 23:52:14 +0000
"Gyrfalcons tagged with satellite-received transmitters showed characteristics
associated with both obligate and facultative migration. Their winter ranges
varied greatly in size, with the largest, ~172,000 km2, being the biggest ever
documented for a raptor. Many individuals made long movements within a winter,
and some spent up to a month at sea. They may have rested on ice and fed upon
seabirds." From the Abstract: Inter- and intraspecific variation of breeding
biology, movements, and genotype in Peregrine Falcon Falco peregrinus and
Gyrfalcon F. rusticolus populations in Greenland. Author: Burnham, Kurt K.
University of Oxford, 2007.
For a less formal presentation see: http://www.bbc.co.uk/nature/13791688,
"Gyrfalcons are 'secret seabirds.'"
Alan Jenkins
Creswell, Oregon
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