The young learn sapsucking by observing their parents once they leave the nest.
(they; leave; the nest) (The young; learn; sapsucking by observing their parents) Context(The young learn,List([0, 15))):(The young; learn sapsucking; ) Context(The young learn sapsucking,List([0, 26))):(The young; learn sapsucking by observing; their parents; T:once they leave the nest)
The young learn,List([0, 15)) The young learn sapsucking,List([0, 26))
they The young The young The young
leave learn learn sapsucking learn sapsucking by observing
the nest
sapsucking by observing their parents
their parents T:once they leave the nest