英文關鍵字
afternoon
animal
animals
avian
baby
barn
begging
bicolor
birdhouse
birdwatching
blue
cheeky
colorful
dainty
day
eat
environment
fauna
feather
feathers
flight
fly
food
hirundo
hole
hungry
migratory
nature
ornithology
passerine
perching
plumage
rustica
small
spring
swallow
swift
tachycineta
tree
vertebrate
wild
wildlife
wing
wings
wood
zoology