英文關鍵字
american
and
animal
avian
beak
beautiful
beauty
bicolor
bird
birds
blue
branch
classic
colorful
conservation
eco
ecology
environment
fauna
feathers
flight
floof
iridescent
left
male
migratory
nature
north
ornithology
pantone
passerine
perch
perched
plumage
preens
sky
songbird
species
spring
swallow
tachycineta
tree
vertebrate
white
wild
wildlife
wing
wings
wood