Grouse said, "I'll stand on this hollow log, and when I tap on it, you
must halloo as loudly as you can."
So Grouse climbed upon a log, ready to tap on it, but when he did so,
Turkey became so excited that when he opened his mouth, he only said,
"_Gobble, gobble, gobble!_"
That is why the Turkey gobbles whenever he hears a noise.