英文關鍵字
animal
beak
being
bird
brown
color
countryside
dabbling
drake
drakes
duck
ducks
ecology
environment
feather
feed
float
flock
food
grass
green
group
keep
lake
lawn
lush
mallard
nature
outdoor
pond
river
rural
season
spring
summer
sunlight
tries
warm
water
waterfowl
wild
wildlife