英文關鍵字
anas
anatidae
animalia
anseriformes
are
aves
bread
bug
chordata
class
clean
cold
crumb
day
dive
drake
dry
ducks
family
feathers
females
fighting
flap
for
genus
ice
icehole
kingdom
males
mallard
open
order
phylum
platyrhynchos
prettify
river
sedge
southern
sunny
swim
water
wild
wings
winter
wintering