My ducks are 3.5 weeks old and every night, I put some peas in a tall glass of water and give it to them (It helps them clean their faces to dig for them). THey get SUPER excited every time I come over to the with that glass!! Last night, I do the same thing and I hear "cheep cheep, quack quack, cheep cheep". Its a very raspy quack, but its there! My little babies are growing up :-(.