I may have just had a conversation with my favorite 4 year old almost entirely in chicken.

(background - at the reference desk we give out hand stamps to anyone who asks for them. You want a chicken on your hand? Here ya go!)

4yo (pointing at the stamps): baaaaawk? bok bok bok ba-bawk baaaaawk!
LP (nodding and picking up the stamp): bok bok bwaaaaaaaawk.
4yo (holding out her hand): ba BAWK bok bok
LP (stamping): bok babawk bok booooook
4yo (waving): bok book babawk bok!

I LOVE MY JOB!