What if the kid can't hear anyone talking anymore zebra finch song?

But hide the same loudspeaker inside a toy painted to look like a zebra finch,and his learning improves.What if the baby never hears another zebra finch’s song?Interestingly enough, it’ll sing anyway.Isolated finches still produce what are called innate or isolate songs.A specific tune might be taught,but the instinct to sing seems to be hardwired into a songbird’s brain.Innate songs sound different from the “cultured” songs learned from other finches