英文關鍵字
avian
beak
bill
bird
bread
city
closeup
colorful
concept
crowd
dove
eat
excrement
eye
feather
feed
fight
flight
flock
floor
fly
flying
food
freedom
gray
grey
ground
group
life
lot
many
motion
nutrition
outdoor
park
pattern
pavement
pigeon
portrait
square
street
struggle
survival
survive
symbol
urban
wing