英文關鍵字
animal
apodidae
apodiformes
apus
bank
bird
breeding
burrow
cave
chaetura
colony
common
dig
dry
echolocation
egg
fastest
fastflying
flight
flock
fly
hole
lot
maneuverability
martin
migratory
mountain
movement
nature
nest
nesting
offspring
otvestny
pelagica
raising
resembling
riparia
saliva
sand
shore
similar
steep
summer
swallow
swallows
swift
swiftlet
water
young