Each map is a visual guide to where a particular bird species may find the climate conditions it needs to survive in the future. We call this the bird’s “climatic range.”
The colors indicate the season in which the bird may find suitable conditions— blue for winter, yellow for summer (breeding), and green for where they overlap (indicating their presence year-round).
The darker the shaded area, the more likely it is the bird species will find suitable climate conditions to survive there.
The outline of the approximate current range for each season remains fixed in each frame, allowing you to compare how the range will expand, contract, or shift in the future.
The first frame of the animation shows where the bird can find a suitable climate today (based on data from 2000). The next three frames predict where this bird’s suitable climate may shift in the future—one frame each for 2020, 2050, and 2080.
You can play or pause the animation with the orange button in the lower left, or select an individual frame to study by clicking on its year.
During migration or in summer, the Black-throated Green Warbler is a common sight across most of eastern North America. While the Audubon climate model predicts an increase in appropriate summer area, an almost total shift in available climate space leaves only 3% of the current available. The Black-throated Green Warbler will have to adapt very quickly to conditions in a completely new breeding range if the projection is borne out. The species is highly migratory, which is an advantage, but much of the new space is far to the west, which may prove a challenge for this largely eastern species.
Explore more birds threatened by climate change around the country.
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