英文關鍵字
alight
animal
aquatic
background
beautiful
bird
brown
christmas
cold
day
duck
establishing
feather
female
float
flock
foot
frozen
gray
grey
group
ice
lake
landscape
mallard
many
migratory
move
nature
ornithology
outdoor
park
plumage
pond
river
ruddy
sheld
shot
snow
swim
swimming
water
waterfowl
wild
wildlife
winter