英文關鍵字
air
anas
animal
animals
avian
backdrop
background
beaks
bird
birds
blue
concept
daytime
ecology
energy
environment
environmental
eurasian
fauna
feathered
feathers
flight
flock
fly
flying
formation
freedom
geese
goose
group
gull
harmony
mareca
migration
nature
pelican
penelope
seagull
sky
white
wigeon
wild
wildlife
wing
wings