英文關鍵字
agriculture
air
animal
beak
beautiful
beauty
bird
birds
blue
bright
bubulcus
colony
colorful
day
egret
environment
family
fauna
feather
feathers
flock
fly
freedom
grain
grass
group
heron
ibis
mallard
mammal
migration
natural
nature
ornithology
outdoor
pattern
plant
rural
spring
trees
tropical
water
white
wild
wildlife
wing