英文關鍵字
animal
beak
beast
bird
birding
bough
branch
branched
brood
building
canopy
claw
collecting
corax
corvus
creature
crisscross
crow
crown
fauna
feather
feathered
flapping
flying
frugilegus
habitat
hiding
juveniles
natural
nature
nest
nesting
ornithology
outdoor
plumage
raven
rook
sit
sitting
species
swing
top
tree
treetop
trunk
twig
vegetation
watching
wild
wilderness
wildlife
wing
winged
wingspan