英文關鍵字
adult
baby
barn
beak
bird
building
closeup
country
countryside
cup
deeply
eat
environment
family
feather
feed
feeding
fledgling
flight
fly
food
forked
habitat
hirundinidae
hirundo
house
hungry
insect
long
migrant
mother
nest
nestling
plank
plumage
roof
rustica
spring
swallow
tail
under
underpart
upperpart
village
wall
wild
wildlife
wing
wingspan
wood
wooden