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.
Recent Red Knot population declines have garnered much attention. A key concern has to do what’s happening on spring migration: migrating Red Knots stage in huge numbers along the Mid-Atlantic coast where they feast on horseshoe crab eggs, a food resource that has been severely depleted by overharvest. Audubon’s climate model brings attention to a new threat: loss of wintering range. The model projects a shift away from over three-quarters of wintering areas with suitable climate in the U.S. and Canada, with particularly sharp losses in Florida. Most Red Knots winter along or near the shore, so rising sea levels will play a key role in determining the Red Knot’s future whereabouts in winter.