英文關鍵字
adult
animal
baby
background
barn
bill
bird
black
blue
childhood
close
closeup
cute
delicate
delichon
elegance
elegant
feather
fine
grace
gracile
green
ground
habitat
hirundinidae
hirundo
house
martin
mature
nature
near
nest
outdoor
outdoors
perched
red
rustica
short
singer
sitting
songbird
songster
swallow
thin
urbica
white
wild
wildlife
wire