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An estimated 200 dead American coots recently have been sighted near Dubuque’s Lock and Dam No. 11 on the Wisconsin side of the Mississippi River.
Fishermen observed the dead birds near O’Leary’s Lake, located near Eagle Point Road, off of U.S. 61/151.
Coots are dark-gray to black in color, with a bright-white bill and forehead. Duck-like in many ways, they are members of the rail family in the same avian order as cranes.
“They’re not much good for anything. Some people eat them,” said Carl Hanson, owner of the Eagle Point fishing barge, who saw the dead birds floating in the water.
The deaths aren’t that unusual. This is the seventh time since 2002 that waterfowl die-offs have been documented on the upper Mississippi River, and each time prior, trematodes were responsible, officials said.
Trematodes are a parasitic flatworm that spends part of its life inside snails. Waterfowl die from trematodes each year, but in years when snail populations are high, mortality rates of snail eaters — American coots and lesser scaup — increase. The invasive faucet snail is an intermediate host for three types of trematodes.
Courtesy of thonline.com
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