英文關鍵字
animals
beak
bird
brood
brown
chicks
defenseless
disheveled
down
duck
ducklings
family
feather
feathered
fluffy
game
grass
hunting
july
mallard
migratory
mom
nature
ornithology
reservoir
river
second
shore
small
summer
swim
touching
water
waterfowl
wet
wild
wings