songless

They are a songless tribe, although their quick, reiterated call as they take to flight has given them the name of chatterers.

The males, who sing, have more white on the wings and tail than the females, who are songless.

While the Flycatchers are therefore technically classed as songless birds, it does not follow that they have no songs.

The poet wonders what "songless tongueless ghost of sin crept through the curtains of the night."

That, then, is another of the supposed songless birds added to the list of singers.