The song is from the movie, also called Springtime In The Rockies, with Gene Autry. It was written by Mary Hale Woolsey and Robert Sauer © 1923. It's in the Gene Autry songbook available here: Gene Autry

WHEN IT'S SPRINGTIME IN THE ROCKIES
(Woolsey-Sauer)

When it's springtime in the Rockies
I am coming back to you
Little sweetheart of the mountains
With your bonny eyes of blue
Once again I'll say I love you
While the birds sing all the day
When it's springtime in the Rockies
In the Rockies far away

(repeat twice)

There is only one verse as far as I know.

alice flynn in montana