Two disjunct populations of the Hutton’s Vireo occur in the U.S. One is along the West Coast, the other in the Desert Southwest. Despite these birds’ isolation and physical differences, their habitats are similar: sunny oak woodlands. Audubon's climate model anticipates a 72 percent loss of current summer range by 2080, with some potential expansion east and north during the winter. But given that this vireo is sedentary in its range, it is unlikely that the species will track winter climate change east; the bird would also need an increase in suitable summer climate, something not predicted by the model. Unresolved is the relative apportionment of predicted range shifts for the coastal versus interior subspecies.
28% of summer 2000 range is stable
53% decrease in summer 2080 from 2000 range
60% of winter 2000 range is stable
68% increase in winter 2080 from 2000 range
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