英文關鍵字
animal
animals
arctic
arctica
aythya
baby
beautiful
beauty
bird
black
blackbirds
brood
childhood
crested
cute
descendant
duck
duckling
ducklings
family
female
fledgling
fuligula
habitat
immature
impuberal
lake
life
mallard
natural
nature
north
ornithology
outdoors
pochard
pond
reservoir
russia
siberia
small
summer
swim
swimming
tufted
watching
water
waterbird
waterfowl
wild
wildfowl
wildlife
yamal
young
zone