英文關鍵字
treefrog
singing
night
bark
tree
frog
sound
noise
vocalization
mating
reproduction
male
climbing
perch
perching
moss
green
gray
hyla
versicolor
hylidae
outdoors
nocturnal
summer
melodic
trill
pleasant
close
macro
natural
environment
herpetology
zoology
ecology
ethology
animal
behavior
call
calling
sing
song