animal
biodiversity
bird
chimney swallow
cute
delicate
difference
distance
environment
eurasian swallow
feather
flight
fly
fragile
free
freedom
group
habitat
hirundo rustica
information
leaves
light
look
monitor
nature
observation
ornithology
outsider
perched
protect
protection
recreation
relax
rest
single
sit
small
summer
swallow
team
teamwork
together
wait
watch
wildlife
wing
wire