One spring day with a morning’s worth of outside chores to do, I went about my business to the tune of a sweet-sounding bird. It seemed to be out in the pasture somewhere — I couldn’t see it but it sang intermittently the whole morning long, and all that time I wondered what kind of bird it was.
      Like a lot of birdsong, it wasn’t unfamiliar. Just something I’d never singled out and paid attention to before. It was spring, of course, and there was a lot of singing going on, but in among the meadowlarks, redwings, and mourning doves, there was this subtle, constant theme — a sweet, pervasive, monotonous song.
      It wasn’t much of a melody — in fact, there was just the one note that, once tried and found in tune, repeated with ever greater confidence, quarter notes, eighth notes, ending in a trill. Plotted on a musical score, it would go straight across — a Bird World one-note samba! But just like the samba, there was unexpected music in the sound.
      I scanned the pasture with my binoculars, but never did see my bird. When the chores were done, I went inside and tried to figure out what kind of bird it had been.
      How do you identify a bird you’ve never seen? With sound as my principle clue, I turned to my Peterson Field Guide for Western Bird Songs, an audio collection published by Houghton Mifflin in association with the Cornell Lab of Ornithology. On two CDs are the songs of 522 birds found in western North America.
     With that many birds to choose from, I set out to narrow down my choices. My bird was small enough to hide itself in native grass, so perhaps it was a warbler or a sparrow. Warblers are indeed on the move in early spring and likely to be found here — but this bird spent all day in open country, which made me think it might be a sparrow instead.
     Perhaps I merely sought the easy answer. According to Kenneth Seyffert’s book, Birds of the Texas Panhandle, there are 38 warblers found around here but only 25 sparrows. Clearly the sparrow theory could speed the process of elimination, so I forged ahead on the idea it might be a sparrow.
      My own sparrow song repertoire isn’t large — four or five come to mind by sound alone. But none of these was the mystery bird. So I turned to my audio field guide again, and began with the sparrows.
      I listened to the sparrows I knew and to the sparrows I didn’t. And then, on Disc 2, Track 41, the announcer said, “Field Sparrow” and what immediately followed was a more than credible rendition of the very song I’d done my chores to all morning long. One sweet note, realized and then multiplied, turned into music by a bird in the field appropriately known as a Field Sparrow.
      According to Mr. Seyffert, the Field Sparrow is an uncommon to common resident in the eastern half of the Panhandle. “It is not generally known that the Field Sparrow is a breeding bird in the Texas Panhandle.” This may be because we hear Field Sparrows singing all the time but never notice these single notes that blend so easily into all the other birdsong.
      Field Sparrows are grayish sparrows with a rusty-red cap, a plain gray tail, and a pink bill... in truth they look a lot like other sparrows.
     But listen for the sweet strains of a one-note samba, and you may know the singer for a Field Sparrow.

[Thanks to Houghton Mifflin’s Peterson Field Guide for Western Bird Songs, and to Kenneth Seyffert’s book , Birds of the Texas Panhandle, published by the Texas A & M University Press.]