I was of the habit of giving my crew a plate of treats every morning - greens, berries, grains, egg, some fruit, mealy worms, etc. My rooster is getting on in years and is very healthy. My last old hen just died. I got three new young hens and continued with my treat plates. But now, nobody will eat the feed. I've tried a few different types. So, I stopped the treats and now it's been two days and except for one hen, they are not eating. No one seems sick. They have oyster shell. They had grit, but I took it up because one of the hens (the one that's eating) was gobbling it up, got a watery crop for a day, and was full of grit - she's fine now. My rooster was eating a lot of it too. I believe the treats I was giving were quite healthy for my birds, but they've got to eat their feed! How long can they go without food? And, any suggestions about what's happening? Lots of people feed treats to their chicken, I can't understand why I am having such an issue.