Where does a puffin bird live?

Depends on the type of Puffin - Atlantic, Horned, or Tufted.

The Atlantic Puffin lives in, big surprise, the North Atlantic. However, they winter further south all the way to New York.

The Horned and Tufted Puffins live in the North Pacific. However, they winter to the South, as far as Baja California.

More specific locations are available on http://en.wikipedia.org/wiki/Puffin.