Sister Species: Snow Goose and Ross’s Goose

BirdNote
16/10/2025

Listen "Sister Species: Snow Goose and Ross’s Goose"

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Episode Synopsis

Ross’s Geese and Snow Geese are both white-bodied waterfowl with black wingtips that can be difficult to tell apart. The pair are a great example of what science calls sister species, which occur when a portion of one species takes an evolutionary step away from the rest, resulting in a species

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