英文關鍵字
agricultural
agriculture
animal
animals
autumn
beak
bill
bird
birds
convalesce
corn
country
crane
cranes
eat
eating
europe
european
fat
fatten
fauna
feather
feathers
field
fly
flying
flyway
food
forage
foraging
fowl
gather
gathering
geese
german
germany
goose
graceful
grain
grey
group
grouping
gruidae
gruiformes
guenzer
harmony
hibernate
hohendorf
legged
legs
long
migrate
migrating
migration
natural
nature
neck
necked
outdoor
outdoors
outside
rest
resting
route
rural
together
tree
trees
wild
wildlife
wing
wings