Inside a grilled mansion window, a caged bird trilled.

A bird trilled from the rooftop of the farmhouse.

A bird trilled in a distant tree, its call echoing from one end of the knoll to the other.

The only sounds were Yankee's hoofs on the soft turf and birds trilling their twilight songs from the distant trees.

The birds were trilling sweetly, and the air smelled very fresh.

A bird trilled a long series of liquid notes.

The branches whispered with a seductive tone, and birds trilled a calling song.

A bird trilled, high on a branch.

Somewhere a bird trilled a high sweet note over the merry noise of the stream.

Smaller birds trilled to one another in a natural symphony that delighted and amazed her.