Long-term monitoring of breeding activity of avian predators on Bylot Island, Nunavut

Gilles Gauthier, Marie-Christine Cadieux &
We are monitoring the nesting activity of Long-tailed Jaegers, Parasitic Jaegers, Glaucous Gulls, Snowy Owls and Rough-legged Hawks. We find nests through either systematic searches or opportunistically. All nests found are positioned with a GPS and revisited during the breeding period to determine laying date, clutch size, hatching date and fledging success. We also study their diet by collecting regurgitation pellets and prey remains at nests (2004-2008) and blood samples from adults and young for...
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