anas platyrhynchos
anatidae
animal
animal isolated
bedraggled
bill
bird
bird isolated
cold
conservation
drake
duck
ecology
environment
feathers
female
feral
fowl
freezing
freezing cold
frozen lake
green
head
ice
lake
male
mallard
nature
ornithology
park
pond
swimming
vertebrate
warmblooded
water
waterfowl
wet
wetlands
wild
wildlife
winter
zoology