Firstly...thanks to everyone for help on the last thread! I am LOVING them! Even more than I thought! They are so friendly actually! But SOOOOOOOOOOOOOOOOOOO messy!!! I have had dogs, cats, rabbits, piggies, hamsters, rats and mice!!!!...and nothing can compare to the mess of these two LOL!!! However I want to treat them...and not sure what is age appropriate for 3-4 week old ducklings? At the moment they are on non medicated chick crumbs....and lots of water...but that is it. Thanks in advance for any help!