英文關鍵字
anas
animal
animals
autumn
avian
background
beak
beautiful
bill
bird
birds
black
blue
cleaning
clypeata
coast
colorful
drake
duck
ducks
edge
environment
europe
feather
female
freshwater
green
group
lake
male
nature
norfolk
outdoors
people
plumage
preening
reflection
resting
ripples
shoveler
video
water
waterfowl
white
wild
wildlife
wings