shine the light on it from the light house with thlobste
r
a unicorn
You ring the bell
The bird does not have a piece of the comic. (see related question)
Wait for principal to leave then you leave
aim the light from the lighthouse at the bird
You leave him in the hideout
you dont
Go back to the blimp on the left of Main Street.
You do not play as Big Nate. He accompanies you around most of the island, and races you on the jet skis.
You can't play "as" Nate, but everywhere you go on the island, he tags along.
There is no Duke among the characters of Big Nate island.
Spitsy is over by the playground (right of the school) and will not leave there.