英文關鍵字
1000
air
animal
away
barn
behavior
bird
birdine
birding
birds
camera
catch
chimney
common
day
ecology
european
feathered
flight
flights
flying
fowl
fps
guide
high
hirundo
house
inhabitants
insectivorous
insects
martin
migration
motion
nature
passerine
river
rustica
slow
species
speed
summer
super
swallow
tour
watching
watern
wild
wildlife