英文關鍵字
animal
background
beak
beautiful
bird
day
drake
duck
ducklings
ducks
environment
eukaryotes
europe
family
farm
fauna
flock
flora
fly
following
goose
grass
green
hunting
lake
little
mallard
mother
natural
nature
outdoor
outdoors
park
pond
poultry
river
siblings
spring
summer
sun
swimming
team
ten
togetherness
water
wave
wild
wildlife
wings
young