Chickens with dirty butts

[rach080296]

I have three chickens who have pretty dirty butts and I want to make sure there's nothing wrong with them It looks like poop is stuck to their feathers they all seem to be eating and foraging together with no problem just need some information and want to do about it or what to look out for you want to go take your inhaler so that you can jump outside so you don't cough you want to come take it if you start coughing you need to go take your inhaler.... They're on a layer pellet they get a lot of house food scraps sometimes the scraps are a couple days old so wondering if giving them food that's a little bit old will make them sick or should I not give them so many scraps any advice is appreciated thank you!

 

[MGG]

I have three chickens who have pretty dirty butts and I want to make sure there's nothing wrong with them It looks like poop is stuck to their feathers they all seem to be eating and foraging together with no problem just need some information and want to do about it or what to look out for you want to go take your inhaler so that you can jump outside so you don't cough you want to come take it if you start coughing you need to go take your inhaler.... They're on a layer pellet they get a lot of house food scraps sometimes the scraps are a couple days old so wondering if giving them food that's a little bit old will make them sick or should I not give them so many scraps any advice is appreciated thank you!

Looks like there's some vent gleet going on. I've thankfully never had to treat it, so I don't know much about that aspect. @Eggcessive can you help?