>>71120043The joke is that intially it just seems as though Kiara did not train the chicken to talk at all, as all of the answers to the questions she asks can just be answered with "buck", which is a common sound that chickens make.
A male deer is called a buck.
200 pennies equals 2 dollars, or two bucks, which the chickens answers as "buck buck".
But then, in a hilarious twist, it turns out the chicken can actually talk when it responds to Mori with a complete sentence.
A truly hysterical joke if I do say so myself.