英文關鍵字
animal
avian
bird
brown
chick
cloudy
color
crested
cristatus
cub
dive
environment
evening
fauna
feathers
food
great
grebe
hunting
lake
nature
nestling
one
ornithology
plumage
podiceps
podicipedidae
podicipediformes
pond
prey
preyed
summer
swim
under
water
waterbird
waterfowl
wave
wild
wildlife
young