"Sing out-let me hear it, you birds!"

We two alone will sing like birds i' th' cage.

In form and habits the swifts resemble swallows, but they are destitute of complex vocal muscles and are not singing birds, but belong to a widely different group allied to the humming birds.

There are singing birds whose harmonious notes proclaim the praises of religion, and in the minds of those who listen to their sweet sounds, remembrance arises of the Buddha, the law, and the brotherhood.

Sing, sing little birds!

The bright-hued butterflies flitted about us and high in the interwoven branches of the thick trees sang birds of vivid plumage.