Peeking in the bluebird box the other day, Bill found these fledglings huddled in the nest. Two days later, you can see (below) that they're growing fast.
I've just read that the bluebird has been considered the harbinger of happiness in many cultures through the years. I agree. As the old song goes....
Life is sweet, tender and complete
When you find the bluebird of happiness.
You will find perfect peace of mind
When you find the bluebird of happiness.
--"Bluebird of Happiness," lyrics by Edward Heyman & Harry Parr Davies