Saw a snowy egret and a little blue heron too, but the bluebird made the best shot. The Wikipedia entry for "Bluebird of happiness" included this:

The world rolls round,—mistrust it not,—

Befalls again what once befell;

All things return, both sphere and mote,

And I shall hear my bluebird's note,

And dream the dream of Auburn dell.

— Ralph Waldo Emerson, May-Day, 1867