英文關鍵字
america
april
arkansas
atlantic
breeding
call
can
chorus
coastline
commonly
day
distance
early
ecosystems
family
forest
found
frog
frogs
genus
habitat
heard
hylidae
illinoensis
illinois
known
lives
midwestern
milen
missouri
north
pacific
pond
pseudacris
ranging
restricted
scattered
singing
song
species
states
that
were