The bird is named after William Clark (of Lewis & Clark fame). As Clark was struggling down the canyon of the Salmon River (in 1805), he discovered this little bird. "I saw to day [a] Bird of the woodpecker kind which fed on Pine burs it's Bill and tale white the wings black every other part..." (The mistakes are Mr. Clark's, not mine.)
I found that pretty interesting, and made me like the little bird even more!
Chipmunks, chipmunks - all over!