American Birding Association Field Guide to Birds of Ontario: A Field Guide Review
10,000 Birds
AUGUST 1, 2023
2012), and (4) Waterfowl of Eastern North America, 2nd ed. The Snowy Owl account focuses on irruptions. The material on Boreal Owl is a wonderfully condensed account about the species’ sexual dimorphism and its relationship to breeding plus the link between the species’ cyclical abundance and the red-backed vole.
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