Gone to the birds

Some bird names sound like songs:

Finches, blackbirds, crows, tanagers, Stellar Jays, Magpies, hummingbirds, larks, swallows, chickadees, sparrows, wrens, thrushes, waxwings, grosbeaks, starlings, nuthatches, pipits, kinglets, gnatcatchers, pelicans, herons, loons, swans, geese, pheasants, falcon.

The peregrine falcon is on the back of the new Idaho quarter. The design features a large falcon looming over a tiny Idaho, along with the State motto, Esto Perpetua (Let it be perpetual).

This could be interpreted in more than one way…

You must not know too much or be too precise or scientific about birds and trees and flowers and watercraft; a certain free-margin, and even vagueness - ignorance, credulity - helps your enjoyment of these things.
-Henry David Thoreau

The recipe for perpetual ignorance is a very simple and effective one: be satisfied with your opinions and content with your knowledge.
-Elbert Hubbard

A wise falcon hides his talons.
-Proverb