c) To find a mate
d) All of the above
2) Birds perch very high so that ......
a) other birds can hear them
b) other birds can see the
c) they can hide there
d) Both A and B are corre
3) The health of a bird can be determined...
a) by the length of its song
b) by the complexity of it
d) Both A and B are corre
c) by the volume of its song
Shorter bird vocalizations are ...
a) territorial songs
b) mating songs
c) warnings
d) None of the above
Young birds perfect their songs by
a) natural instinct
b) listening and
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