I just got a new bag of purina start & grow chick starter today and when I opened it, it looks like it is moldy. We have some food from the last bag and the feed from both bags looks different. The one that I think is moldy has greenish colored pieces of food and it smells bad compared to the feed from the last bag. So is it moldy? Thankfully, I haven't fed any to my birds yet. I am going to wait and see what you guys think before I use it.