The vagrant kelp gull mated with a local herring gull, though the chick did not survive. Experts say it's a "complete mystery ...

A kelp gull has been spotted in Milwaukee under the Hoan Bridge, the first confirmed sighting of the species in Wisconsin.

A kelp gull stands near its nest on a roof along the Milwaukee shore of Lake Michigan. The bird, which mated with a Herring gull, is the first of its species documented in Wisconsin.

Rare Kelp Gull spotted on Milwaukee's lakefront, a first for Wisconsin The bird is typically found in South America, New Zealand and even Australia.

A Kelp Gull, which is native to the coasts in the southern hemisphere, was seen nesting with Herring Gulls in Milwaukee, Wisconsin, officials said.