英文關鍵字
animal
beak
biosphere
bird
birdwatching
blue
danube
delta
feather
fishing
flight
flock
fly
freedom
freshwater
great
hunter
life
marshland
migratory
moorland
muskeg
nature
onocrotalus
ornithology
pelecanus
pelican
plumage
protected
rare
reserve
river
romania
sea
summer
swamp
vegetation
water
wet
wetland
white
wild
wildlife
wing
yellow