英文關鍵字
animals
backgrounds
beak
beauty
birds
brown
cable
cage
clear
close
day
environmental
feather
fence
flock
flying
freedom
grid
head
life
line
metal
nature
one
outdoors
perch
pigeon
power
relaxation
row
rowing
seat
side
silhouette
sitting
small
sparrow
steel
string
summer
sun
sunlight
supply
transparent
urban
waiting
wild
wildlife
wing
wire
zoo