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silhouette
flock
black
birds
flight
flies
circles
house
fly
rooftop
gloomy
foggy
trees
raven
cloudy
gliding
empty
factory
wintertime
sky
soaring
crows
high
grey
lots
yard
many
weather
dramatic
dark
scary
misty
hazy
dim
wild
chaos
flap
wings
pigeons
swirling
large
air
crowd
space
migrating
drift
freedom
group
herd