The Apostle Islands are a group of 22 islands in Lake Superior, off the Bayfield Peninsula in northern Wisconsin. The majority of the islands are located in Ashland County—only Sand, York, Eagle, and Raspberry Islands are located in Bayfield County. All the islands except for Madeline Island are part of the Apostle Islands National Lakeshore. The islands in Ashland County are all in the Town of La Pointe, except for Long Island, which is in the Town of Sanborn, while those in Bayfield County are in the Towns of Russell and Bayfield.

"The Lakeshore provides important nesting habitat for the following colonial nesting birds: herring and ring-billed gulls, double-crested cormorants, great blue herons, and cliff swallows. Gull and Eagle Islands combined have 88% of the lakeshore's breeding herring gull populations and 80% of the herring gull breeding population on the entire Wisconsin shore of Lake Superior. Eagle Island has the only great blue heron rookery in the park."

More Info: en.wikipedia.org