英文關鍵字
above
afraid
air
avian
bad
beak
bevy
big
biology
birding
brachyrhynchos
bright
caw
cloud
colony
conservation
corvus
crowd
dark
day
depressing
dramatic
dream
dreary
effortless
elements
endothermic
fear
feathers
flight
float
flycatcher
free
glide
gliding
gloomy
intelligent
journey
leaving
light
mid
migrating
move
natural
ornithology
outdoor
outline
panic
raven
ravens
rise
scavenger
season
shape
shocked
soar
sombre
species
symbol
tall
wilderness
wildlife
wind
zoology