英文關鍵字
animal
background
bacteria
beak
bird
black
city
closeup
conservation
corvidae
crow
different
dirty
disposition
dump
dumping
eat
ecology
environment
environmental
fauna
feather
figure
food
garbage
grunge
humor
hunt
infection
junk
kind
nature
outdoor
pest
plastic
raven
rubbish
scavenge
scavenger
sitting
species
standing
throwing
trash
two
waste
white
wild
wildlife
wing