The Yellow-rumped Warbler (aka “Butterbutt”) has returned to our woodlands, and our ears and eyes are all the richer for it. The song of this bejeweled songbird often stumps me the first time I hear it every spring. It is described as a “slow, soft, sweetly whistled warble” or trill. It is also said to resemble the sound of an old-time sewing machine. To see which song description you prefer, or to make your own, go to http://www.allaboutbirds.org/guide/yellow-rumped_warbler/sounds.