Greater White-fronted Goose I believe this is a young goose just now acquiring the distinctive white face patch of the adult.
Socorro County, Bosque del Apache NWR, pond at tour entrance, NM
Equipment: Swarovski ATS 80D, 25-50x Eyepiece, UCA, balance rail and Nikon Coolpix P6000
Anatidae Anser - 2009-12-19 - EIDX: 13