英文關鍵字
addition
birds
classified
colour
dabbling
duck
ducks
eat
extant
fed
feed
flight
fly
fresh
genus
grass
group
lake
mareca
mate
one
pair
pond
river
species
swim
uk
water
wet
widgeons
wigeon
wigeons
英文關鍵字
addition
birds
classified
colour
dabbling
duck
ducks
eat
extant
fed
feed
flight
fly
fresh
genus
grass
group
lake
mareca
mate
one
pair
pond
river
species
swim
uk
water
wet
widgeons
wigeon
wigeons