英文關鍵字
asphalt
background
beak
beautiful
bird
birds
birdseed
cereals
city
corn
creature
crowd
day
detail
dove
eat
eating
feather
feed
feeding
fly
food
freedom
gray
grey
ground
hungry
life
lot
millet
nature
outdoor
peck
pigeon
pigeons
positive
seeds
sidewalk
sparrow
sparrows
spring
square
street
switchgrass
town
wheat
wild
wing
wings