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Hooded Mergansers ©Steve Frye. Wild Bird Company - Boulder, CO, Saturday Morning Bird Walk in Boulder County - December 26, 2015.

Hooded Mergansers ©Steve Frye. Wild Bird Company - Boulder, CO, Saturday Morning Bird Walk in Boulder County - December 26, 2015.

Hooded Mergansers ©Steve Frye. Wild Bird Company - Boulder, CO, Saturday Morning Bird Walk in Boulder County - December 26, 2015.

Hooded Mergansers and Gadwall ©Steve Frye. Wild Bird Company - Boulder, CO, Saturday Morning Bird Walk in Boulder County - December 26, 2015.

Hooded Mergansers and Mallard ©Steve Frye. Wild Bird Company - Boulder, CO, Saturday Morning Bird Walk in Boulder County - December 26, 2015.

Mink Tracks ©Steve Frye. Wild Bird Company - Boulder, CO, Saturday Morning Bird Walk in Boulder County - December 26, 2015.

Hooded Mergansers ©Steve Frye. Wild Bird Company - Boulder, CO, Saturday Morning Bird Walk in Boulder County - December 26, 2015.

Merlin ©Steve Frye. Wild Bird Company - Boulder, CO, Saturday Morning Bird Walk in Boulder County - December 26, 2015.

Mink Tracks ©Steve Frye. Wild Bird Company - Boulder, CO, Saturday Morning Bird Walk in Boulder County - December 26, 2015.

Deer Tracks ©Steve Frye. Wild Bird Company - Boulder, CO, Saturday Morning Bird Walk in Boulder County - December 26, 2015.