You can follow the fall migration movements of eight Common Loons from Minnesota and Wisconsin online on the Upper Midwest Environmental Sciences Center website Common Loon Migration page at
The birds were tagged with radio transmitters in July as part of a federal study on avian botulism. Ten loons were tagged, two of them from a lake near Collegeville. Eight birds are being followed at the moment. Here is a summary of movements to date.
Minnesota bird 55482 left the Collegeville area on Aug. 22, and was found dead at Green Bay, Wis., four days later. It had died of aspergillosis, a rapidly fatal respiratory infection caused by a fungus.
Minnesota bird 55480 moved from the Collegeville area to Forest Lake on Oct. 16, the next day flying east. It was on Lake Michigan on Oct. 24.
Wisconsin birds 55489, 55484, 55479, and 55491 had not moved from their breeding lake (the Turtle-Flambeau flowage) as of Oct. 24.
Wisconsin bird 55490 moved from the T-F flowage on Oct. 16. It went to Green Bay, and was located on Lake Michigan Oct. 24.
Wisconsin bird 55485 moved from the T-F flowage to Lake Michigan in mid-August. It was there on Oct. 24.