My feeders have been mobbed this weekend by finches, mostly goldfinches and young house finches just beginning to grow in some pink feathers. Working outside I constantly hear their calls--high-pitched, two-note little songs. Even when I can't see them, their voices in the trees give them away, a group of children playing together happily in the next room.
 
Finches' singsong chatter,
sunny morning.
I hum myself.