英文關鍵字
anas
anatidae
animalia
anseriformes
aves
bread
chordata
class
clean
cold
crumbs
day
dive
drake
dry
ducks
enjoy
family
feathers
females
flap
genus
homemade
kingdom
males
mallard
order
phylum
platyrhynchos
prettify
rays
sedge
struggle
sun
sunny
survival
swim
wild
wings
winter
wintering