Breeding activity of avian predators on Herschel Island

• Main Author: Donald Reid, Wildlife Conservation Society Canada
• Format: Dataset
• Language: English
• Published: Canadian Cryospheric Information Network 2015
• Subjects: Birds; Herschel Island; Long-tailed jaeger; Nesting; Peregrine falcon; Reproductive success; Rough-legged hawk; Short-eared owl; Snowy owl; Yukon; International Polar Year-Arctic Wildlife Observatories Linking Vulnerable EcoSystems; Arctic; Herschel; International Polar Year; Long-tailed Jaeger; peregrine falcon; snowy owl; Tundra
• Online Access: https://dx.doi.org/10.5443/748; https://www.polardata.ca/pdcsearch/?doi_id=748

We are monitoring the nesting activity of Snowy Owls, Rough-legged Hawks, Peregrine Falcon, Short-eared Owls, and Long-tailed Jaegers. 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 and blood samples from adults and young for isotopic analysis. Abundance of these birds is also determined using visual counts from a vantage point and transects. In 2008, we marked 4 Snowy owls with satellite transmitters to track their migratory movements over a 2-year period. : Purpose: Long term monitoring of the breeding activity (abundance, phenology and success) of avian predators of the tundra : Summary: Not Applicable