英文關鍵字
accelerated
adult
animal
animals
background
beak
beautiful
bird
black
blue
branch
ciconia
close
clouds
day
ecology
electric
electrical
electricity
environment
environmental
environmentally
fauna
feather
flight
friendly
happiness
high
home
large
move
nature
nest
one
ornithology
outdoors
pillar
pole
protection
red
sky
spring
standing
stork
summer
symbol
they
top
video
white
whitegray
wild
wildlife
wings
wires