animal
background
beak
bird
birds
black
blue
cable
crowd
danger
electric
electrical
electricity
environment
flight
flit
flock
fly
group
high
hover
huddle
join
large
line
lot
many
masses
nature
ornithology
outdoor
perch
perched
power
resting
row
silhouette
sit
sky
space
sun
swarm
tower
voltage
wild
wildlife
wing
wire