anatidae
avian
beak
beaks
bird
birds
boulder
boulders
canyon
colorado
colorado rocky mountains
common
common merganser
cycling trail
denver
ducks
feathers
female merganser
fisheating ducks
foothills
goosander
hiking
lake
littleton
merganser
mergus
mergus merganser
mountains
nature
north america
recreational area
red feathers
river
river bank
rock
rocky mountains
seaducks
serene
south platte river
united states
watchful
water
water fowl
waterbird
waterton canyon
webbed feet
west
wild
wilderness
wildlife