英文關鍵字
animal
ardea
background
beach
beak
beautiful
behavior
bird
blue
brother
colorful
delta
egret
egretta
ethology
family
fisher
fishing
great
grey
herodias
heron
hunter
isolated
lake
marsh
natural
nature
neck
one
ornithology
plumage
plume
pond
portrait
predator
pretty
river
sea
space
standing
tall
wading
water
waterfowl
white
wild
wildlife
wing