英文關鍵字
angle
animal
approaching
background
beach
beak
beauty
big
bird
black
bright
claw
closed
copy
cornix
corone
corvus
croak
crow
danish
drop
eye
feather
feathers
flight
food
foraging
garden
glossy
grass
gray
green
ground
hoodiecrow
investigation
lawn
look
low
meeting
nature
ornithology
park
plumage
predator
raucous
single
songbird
space
spring
walking