What's up? No Song Today?

This Song Sparrow hopped around the backyard but he didn't sing one note of one song! I don't see a lot of Song Sparrows in my back yard, so I was happy to see him.  My extra shot seems a bit invasive of his privacy......but he kept turning and hopping down into my raised flower beds.....he has such a fluffy white bottom. How does he stay so clean?
 
It was another nice day, although a bit windy.