英文關鍵字
animal
avian
beak
beautiful
big
birds
care
close
cygnet
cygnus
elegance
environment
feather
feed
feeding
field
floating
food
fowl
garden
grass
green
lake
mute
natural
nature
neck
nibble
plants
pond
protection
reeds
reflection
river
snack
spring
summer
surface
swan
swim
swimming
water
waterfowl
white
wild
wilderness
wildfowl
wildlife
wing
young