英文關鍵字
animal
background
bank
bird
burrow
clay
cliff
colony
day
flight
ground
group
hole
house
many
natural
nature
nest
nesting
outdoors
passerine
river
sand
sandy
shore
summer
swallow
vertical
wild
wildlife
yellow
英文關鍵字
animal
background
bank
bird
burrow
clay
cliff
colony
day
flight
ground
group
hole
house
many
natural
nature
nest
nesting
outdoors
passerine
river
sand
sandy
shore
summer
swallow
vertical
wild
wildlife
yellow