Life of a River - Biology
Terrestrial animals (pg 2
Birds are also attracted to the river corridor.
The diversity of species depends on the plant
diversity, age classes and width of the corridor.
Research has shown that older, larger trees are
important habitat for nesting herons, egrets,
osprey, eagles, and a variety of declining
songbirds. Bald eagles and osprey prefer large
white pine and aspen trees near the water for
roosting and nesting sites. Kingfishers swoop down
from streamside perches to catch their lunch.
In the Minnesota River Valley State Recreation
Area, the one remaining stand of intact floodplain
forest with large cottonwood and silver maple trees
is home to a wide variety of bird species that are
not found in other parts of the valley where
forests are being selectively logged. Species
include red-shouldered hawk, Acadian flycatcher,
and cerulean warbler.
The Vermillion River Bottoms along the upper
Mississippi River is one of the last places to
support Cerulean warblers. Crucial structural
requirements for Cerulean warblers in floodplain
forests include the presence of tall trees with
large upper branches sturdy enough to support
nests. Large cottonwood, swamp white oak, and elm
trees are particularly good species.
et al., 1996); (Knutson
and Klaas, 1998)
Osprey, great blue heron, Louisiana waterthrush,