英文關鍵字
alight
animal
anseriformes
background
beautiful
bird
brown
christmas
cold
day
drake
duck
establishing
female
float
flock
frozen
gray
grey
group
ice
lake
landscape
mallard
nature
ornithology
outdoor
park
plumage
pond
pool
river
roody
shot
snow
swim
swimming
tadorninae
thaw
water
waterfoul
webfoot
white
wild
wildlife
wing
winter