Poetry help, PLEASE!?

heres the poem:

There was a Boy; ye knew him well, ye cliffs

And islands of Winander! many a time,

At evening, when the earliest stars began

To move along the edges of the hills,

Rising or setting, would he stand alone,

Beneath the trees, or by the glimmering lake;

And there, with fingers interwoven, both hands

Pressed closely palm to palm and to his mouth

Uplifted, he, as through an instrument,

Blew mimic hootings to the silent owls

That they might answer him.—And they would shout

Across the watery vale, and shout again,

Responsive to his call,—with quivering peals,

And long halloos, and screams, and echoes loud

Redoubled and redoubled; concourse wild

Of jocund din! And, when there came a pause

Of silence such as baffled his best skill:

Then, sometimes, in that silence, while he hung

Listening, a gentle shock of mild surprise

Has carried far into his heart the voice

Of mountain-torrents; or the visible scene

Would enter unawares into his mind

With all its solemn imagery, its rocks,

Its woods, and that uncertain heaven received

Into the bosom of the steady lake.

This boy was taken from his mates, and died

In childhood, ere he was full twelve years old.

what I am really confused about is how the boy died? Or is this something deeper thats not just him dying?