英文關鍵字
anatidae
animal
animals
anser
arrangement
beautiful
bird
birds
calming
cloudy
conservation
duck
environment
europe
fauna
feather
flight
flock
fly
flying
formation
freedom
geese
goose
graceful
group
harmony
leader
migrate
migrating
migration
migratory
nature
nostalgic
outdoor
reserve
romania
sky
time
togetherness
tranquil
wild
wilderness
wildlife
wing
wings
winter