I know this has been asked a million times. And I pretty much know everything to do and not do except... I'm getting everything together that I will need when the ducklings arrive and all the game bird starter I've found has really high protein except one. Manno pro game/show bird starter. It has 24% protein (unmedicated). I've heard 20% is ok. Will the extra 4% hurt them? I want to avoid angel wing. And I've read that I need to give them sand as grit to grind their food. Should I just put a bowl of sand in their enclosure as soon as they arrive? Sorry if that sounds really stupid. But it's better to ask and sound stupid than do something to harm them.