Came across a Trumpeter Swan at Chatfield today. Parked at the trail head area past kingfisher bridge, walked the trail to the first pond, then to the second pond which is known as Pond #5 on the map I looked at. Lone bird, very large. Close range. Plenty of other ducks out on this pond/lake, as much of it was not frozen. My ebird report has pictures and a description.
http://ebird.org/ebird/view/checklist/S33246282
Thomas Holub, Littleton, CO