英文關鍵字
adult
american
appearance
asia
bird
birds
black
breeds
cheek
chestnut
crown
differentiate
duller
elsewhere
eurasia
eurasian
extensive
family
german
including
introduced
little
montanus
most
nape
native
passer
passerine
patch
plumaged
pure
range
recognised
rich
several
sexes
similarly
southeast
sparrow
states
subspecies
temperate
tree
united
unrelated
varies
version
white
young