英文關鍵字
duck
caring
ducklings
feeding
birds
ecology
waterfowl
animal
bird
small
wild
turquoise
down
water
nestling
birdlife
waterbird
domestic
farm
little
park
pond
wildlife
swim
enjoyment
feathers
bill
brown
fowl
group
nature
ornithology
poultry
food
hunger
aqua
lake
rural
baby
young
fauna
quill
zoology