Why have my chickens and ducks have stop eating?

[Orange Chicken]

Hi this is my first time raising them and now it's getting hard!
I have ten chickens
~ 2 male Fayoumi
~ 1 Delaware
~ 1 Campine black mix
~ 1 Norfolk grey
~ 1 red breasted rosecomb
~ 1 American game (bantam)
~ 1 Hungarian Yellow
~ 1 Pyncheon
~ 1 Campine (gold)
Just wanted to have more info on all of them, your experience with them? and they live with two of my Pekin ducks but since two days none of them have ate anything, their diet usually consists of grains (mixed Pigeon) , chicken feed, duck feed, calcium pellets, spinach and whatever table scraps we have. I specially buy spinach for chickens and cabbage for ducks but they haven't eaten anything since two days, and also my Delaware laid her first egg about a week ago and hasn't laid the second one yet so when should I be expecting the second one? Oh and all of them are 5 - 6 months old, and live peacefully except the males sometimes have small fights but nothing big.

 

[Den in Penn]

Nothing at all? That is hard to understand, with the number of birds and the variety of foods. If it was just one feed and they were confined I would have said that the feed may be bad. If they get out and forage then they maybe getting all they need from that.