It lifts the human heart to hear the lovely lilts, trills and coos of birds like the Spanish timbrado, the rose-breasted grosbeak, the German roller or the common nightingale. Then there's this guy, who sounds like a baby crying. A lot. Really, pretty much exactly like a baby crying. So much so, in fact, that it's downright disturbing. And annoying, depending on how you feel about crying babies. Though on some level, it is quite impressive. So it's all of those things, just like a baby. And the good news is, no diapers are involved.