02 February 2015

Johnson Creek, Wisconsin: The Works

By "the works" I mean all 7 of our expected winter gull species...

I spent a couple of hours near the Johnson Creek Landfill today in Jefferson County, Wisconsin. The gulls responded well with ~900 Herrings dominating, ~25 Ring-billeds, and among them the following highlights: Glaucous (4), Kumlien's (3), Thayer's (5-6), Great Black-backed (1), Lesser Black-backed (3), and an intermediate 2nd cycle type Thayer's/Kumlien's.

Kumlien's Gull (adult). Jefferson County, WI. 02 Feb 2015.

Kumlien's Gull (1st cycle). Jefferson County, WI. 02 Feb 2015.

Glaucous Gull (1st cycle). Jefferson County, WI. 02 Feb 2015.

Adult American Herring showing alternate head pattern. Jefferson County, WI. 02 Feb 2015.

2nd Cycle Thayer's/Kumlien's type. Tending towards Thayer's per the dark outer primaries, although some Kumlien's may match this.
Jefferson County, WI. 02 Feb 2015.