Jenny E. Ross / Snow Geese (Chen caerulescens) and Ross's Geese (Chen rossii) taking off from field where they have been feeding, Imperial Valley, California, USA.
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Charlie Summers / Three Ross's Geese (Chen rossii) flying, Bosque del Apache, New Mexico, USA, January.
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Charlie Summers / Snow Geese (Chen caerulescens), both the white and blue phase, as well as Ross' Geese (Chen rossii) flying Bosque del Apache, New Mexico, USA, January.
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Charlie Summers / Ross's Goose (Chen rossii) in flight with Snow Goose (Chen caerulescens) Bosque del Apache, New Mexico, USA, January.
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Jack Dykinga / Flocks of birds including Snow goose (Chen caerulescens) and juvenile Sandhill Cranes (Grus canadensis) Bosque del Apache National Wildlife Refuge, New Mexico. January 2013
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Charlie Summers / Light Geese in flight. Light Geese are a combination of Snow Geese (also known as Blue Goose) (Chen caerulescens) and Ross Geese (Chen / Anser rossii). Bosque del Apache, New Mexico, USA, January.
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Charlie Summers / Light Geese landing. Light Geese are a combination of Snow Geese (also known as Blue Goose) (Chen caerulescens) and Ross Geese (Chen / Anser rossii). Bosque del Apache, New Mexico, USA, January.
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Charlie Summers / Light Geese, consisting of Snow Geese (Chen caerulescens), also known as blue Geese, and Ross's Geese (Chen / Anser rossii) rest in numbers for safety. Bosque del Apache, New Mexico, USA, January.
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Winfried Wisniewski / Ross' Goose (Chen rossii) flock at rest during migration, North America
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Roland Seitre / Ross's goose (Anser rossii) among Snow geese (Anser caerulescens) on water, during winter migration. Victoriaville, Quebec, Canada. November.
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Jack Dykinga / Sandhill cranes (Antigone canadensis) standing in pond as Snow geese (Chen caerulescens) and Ross's geese (Anser rossii) fly above at sunrise, Bosque del Apache National Wldlife Refuge, New Mexico...