animal
bird
birds
cable
cling
contour
crowd
danger
disappear
dwell
electric
environment
flit
flock
flutter
gather
grab
group
high
hover
huddle
join
large
league
line
live
lot
many
masses
nature
outdoor
pattern
perch
pigeon
poultry
resting
roost
shelter
shoal
silhouette
sky
soar
space
stay
summer
swarm
voltage
wild
wildlife
wire