英文關鍵字
swallow
nest
rain
chicks
nestling
bird
tent
structure
metal
rainy
hunting
fed
feeding
food
shed
meal
wings
protect
feathers
cloudy
young
city
swift
water
animal
color
beak
day
exterior
farm
hide
little
metallic
nature
perch
roof
summer
barn
adult
behaviour
calling
factory
flight
flying
steel
awning
feed
drop
away