Birds
____________________
have
____________________
,
two
____________________
and
a
____________________
.
Many
of
them
live
on
land
.
They
can
____________________
,
and
most
birds
can
____________________
.
Other
birds
,
such
as
ducks
,
live
on
land
and
in
water
.
They
have
____________________
____________________
to
help
them
swim
.
Birds
do
not
have
teeth
,
they
have
____________________
.
Birds
breathe
____________________
with
their
____________________
.
They
are
____________________
.
