Keets keep dying.

[Chicken_tiger_catt]

So, there was a sale at rural king, and I ended up getting seven meat birds, a few egg layers, and some Guinea keets.
Within a day, 3 of the keets were dead. It’s been a few days and I thought they were fine now, but I just woke up and found that another one was dying. It looked like it had a butt prolapse, but that could be cause of injury, or it could have happened if it was already weak and then got trampled by the meat chicks. I did find it away from the light, lying next to the feeder.
Another thing is that I’m feeding the chicks 17 percent protein all flock feed. It’s fine for chicks, but makes me wonder.
So do you guys think it’s just bad stock, was it accidentally killed by the larger brood mates, or am I starving my birds?

 

[Chicken_tiger_catt]

I should also specify that the keets seemed to be dying a lot in the store too. I work part time during the afternoon shift, and around 3 or 4 died in the store last week. But they all seemed healthy when I bought them.