英文關鍵字
animal
baby
background
beak
bird
branches
bush
chick
concept
conceptual
cute
defenseless
ecology
fauna
fear
feathers
fly
foliage
fowl
free
freedom
green
hand
hands
hold
holding
human
insectivorous
juvenile
leaves
little
natural
nature
nestling
object
ornithology
plumage
protection
scared
sitting
small
sparrow
spring
springtime
summer
sun
sunlight
sunshine
tail
tame
tweet
wild
wildlife
wings
young