英文關鍵字
aegyptiacus
africa
african
anatidae
ancient
animal
around
beak
bird
brown
conservation
duck
ecology
egyptian
environment
eyes
fauna
feather
feathers
freedom
goose
grass
habitat
lake
legs
manyara
native
natural
nature
outdoor
patch
pond
quack
reflection
sacred
south
southern
species
swim
tropical
unspoiled
variation
walking
water
waterfowl
wild
wilderness
wildlife
wings