英文關鍵字
anatidae
animal
anseriformes
aves
aythya
background
baer
baeri
beautiful
beauty
bird
blooded
chordata
conservation
cute
decoration
duck
ducks
eating
ecology
environment
eurasia
family
feathers
food
green
lagoon
lake
migration
nature
ornithology
pochard
pond
seabird
species
vertebrate
warm
water
waterbird
wetland
white
wild
wildlife
wings
zoology