英文關鍵字
nature
sky
wildlife
group
birds
flock
wild
fly
blue
formation
freedom
black
flight
autumn
animals
crows
season
africa
wings
winter
wing
silhouette
circle
outdoors
migrating
environment
aerial
natural
large
flying
beautiful
feather
bird
colony
contour
corvus
crowd
cutout
stink
exterior
problem
polygon
head
isolated
pollution
recycling
collection
chicks