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Siena Reservoir at Anthem
Illustrated Checklist
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Native and Naturalized (115)
Exotic: Escapee (1)
Hybrids (3)
- Snow x Ross's Goose (hybrid) Anser caerulescens x rossiiLast observed by Jack Bushong on 29 Dec 2018
- Snow x Canada Goose (hybrid) Anser caerulescens x Branta canadensisLast observed by David Dowell on 14 Jan 2014
- Common x Barrow's Goldeneye (hybrid) Bucephala clangula x islandicaLast observed by Bill Schmoker on 4 Jan 2015