英文關鍵字
along
and
animal
animals
august
beak
bird
birds
black
blackbird
bobbing
branch
cinclus
crocodile
crow
dark
dipper
down
duck
feather
feathers
fly
green
head
hippo
lake
mammal
nature
ocean
otter
penguin
pond
river
scotland
sea
small
stone
swim
swimming
wader
water
white
wild
wildlife