英文關鍵字
anas
bill
bird
brown
common
dark
ducks
eye
female
mallard
markings
mp4
name
orange-yellow
platyrhynchos
scientific
video
英文關鍵字
anas
bill
bird
brown
common
dark
ducks
eye
female
mallard
markings
mp4
name
orange-yellow
platyrhynchos
scientific
video