英文關鍵字
animal
avian
beak
biologist
biology
bird
birding
boreal
captured
child
close
crow
examine
explores
eyes
face
feather
flu
hand
hold
illness
immunize
laboratory
little
look
mountains
nature
outdoors
owl
poultry
practice
raven
rocky
school
schoolboy
science
scientist
sick
spotted
study
training
wild
wildlife
wing
yellow