of Climate Change on Bird Distribution and Migration Patterns
The Great Lakes
region supports more bird species than anywhere else in the conterminous
US except for northern New England. The region is the only place
in the world where the endangered Kirtland´s Warbler breeds.
This species nests in young (5-23 years old) jack pine stands with
specific vegetation characteristics found mainly in areas of northern
lower Michigan. The Great Lakes region is important for many migrating
birds as well. Hawk Ridge, located just outside Duluth, Minnesota,
and areas along the Detroit River are corridors for the Broad-Winged
More than 40
globally important sites have been identified in the Great Lakes
region. The Upper Mississippi/Trempeleau National Wildlife Refuges,
located along the Mississippi River between Minnesota and Wisconsin
and continuing farther south into Illinois and Iowa, host more than
100,000 Canvasbacks (>20% of the world´s population) and more
than 200,000 ducks of other species during their annual southbound
fall migration. Bald Eagles also use this refuge, with more than
600 being found there in the winter.
impac ts may include fewer duck-hunting opportunities, as well as
Sharp-tailed Grouse or Gray Partridge. On the other hand, there
may be more opportunities to hunt Ring-necked Pheasants and Northern
losses of neotropical migratory bird species in Michigan (32%),
Minnesota (20%) and Wisconsin (32%). Particularly hard hit would
be the wood warblers with large numbers of species projected to
be extirpated from Michigan (61% lost), Minnesota (52% lost) and
Wisconsin (67% lost).
Bird Migration and Distribution Assessment
report available in PDF.
represents the overall loss currently found in the area
represents the loss of species currently found in the area offset
by the species moving into the area from outside of the region.