英文關鍵字
alpine
animal
animals
behaviour
bird
birds
birdwatching
caucasus
chough
circling
cliff
concept
corbie
corvus
crow
crowd
daw
edge
feather
flock
flying
fog
graculus
gray
heavy
hermit
horde
jackdaw
jackdaws
killigrew
migration
migratory
mixed
multitude
nature
north
ornithology
pack
prey
pyrrhocorax
raven
redbilled
rook
rooks
scavenger
silhouette
smart
swarm
wildlife
wingsn
yellowbilled