英文關鍵字
animal
ardor
background
beautiful
bird
birds
branch
canto
colorful
cute
early
eurasian
european
feather
finch
forest
fun
garden
green
light
male
march
migratory
nature
needles
ornithology
pine
season
singer
singing
siskin
sky
small
song
songbird
spinus
spring
springtime
sunlight
tit
tree
trill
warble
white
wild
wildlife
wing
yellow