英文關鍵字
air
animal
animals
beautiful
bird
birds
blue
call
clouds
cloudy
coast
color
common
crane
cranes
day
environment
exterior
flight
flock
fly
flying
formation
geese
grounds
group
hundreds
life
many
migrate
migrating
migration
nature
north
ornithology
shape
sky
soar
soaring
sound
swarm
thousands
togetherness
white
wild
wildlife
winter
wintering