Assertion: snow goose's number | /r/CapableOf | overgraze their tundra habitat
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Source sentences:
text: In the mid-twentieth century, Ross’s Goose populations were low (in 1963 as few as 25,000 in California, their winter stronghold), but warming in the arctic has led to a steep increase in this species as well as in Snow Geese—to the point where the growing numbers of birds are overgrazing their tundra habitat.