英文關鍵字
small
lone
black
coot
duck
white
beak
swims
flaps
wings
calm
surface
greenish
water
pond
lake
viewed
float
waterbird
drifting
ripple
diving
migratory
reflection
fulica
atra
crake
river
look
plumage
webbed
feet
movement
moving
motion
silence
waterfowl
rowing
frontal
shield
bald
eurasian
swim
environment
wild
bird
animal
background
wildlife
alone
flap
green
top
view
rallidae
feathers