American Black Duck

ambduc
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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.

Climate Endangered

American Black Duck

The darker the color, the more favorable the climate conditions are for survival. The outlined areas represent approximate current range for each season. More on reading these maps.

The darker the color, the more favorable the climate conditions are for survival. The outlined areas represent approximate current range for each season.

More on reading these maps.
Winter
Summer

Winter Range
Summer Range
Both Seasons
Zoom InOut
Focal Species
Bonnie Shulman/Flickr Creative Commons

This sleek duck of northeastern forest lakes and coastal marshes has suffered a long, persistent decline for over a century—largely owing to its close relative, the Mallard, which has spread into the Northeast following the clearing of forest, interbreeding with the American Black Duck and replacing it in many locations. Audubon's climate model shows a future for the species that at first glance doesn’t seem too bad, with areas of potentially suitable climate increasing slightly in the summer season and more so in winter. However, much of the potential new area opens up in the far west, where the Black Duck does not occur. It’s doubtful that the species would make that westward leap, especially if pressure from the Mallard continues, so prospects for this species may be worse than predicted.

Species Range Change from 2000 to 2080

The size of the circles roughly indicates the species’ range size in 2000 (left) and 2080 (right).

The amount of overlap between the 2000 circle and the 2080 circle indicates how stable the range will be geographically. Lots of overlap means the bird’s range doesn’t shift much. No overlap means the species will leave its current range entirely.


Birds at Risk

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You Can Help

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