Abert's TowheeMelozone aberti
Along streams in the desert Southwest, a sharp pinging note in the thickets announces the presence of Abert's Towhee. If an observer tries to approach, a pair of these towhees may stay just ahead and out of sight, calling in an odd squealing duet when pressed too closely. When undisturbed, they feed on the ground under dense bushes, scratching among the leaf-litter. Many southwestern "specialty birds" have extensive ranges in the tropics, but this towhee barely gets across the border into northwestern Mexico.