What breeds are these?

[BantamLover21]

The one on the right is a brown Leghorn. The one on the left is a mix, or a UK hybrid that I wouldn't know.

What do you mean they have a cold? Chickens do not get colds, however they are susceptible to a number of respiratory illnesses. Many of those make the birds carriers for life.

 

[hxgumdrop]

I managed to get her healthy then when they went out with my hens marmite got beaten up and poorly again so i seperated her and got her antibiotics and all was looking good for her to go back in with my hens tomorrow. Then today she stopped eating but laid a normal egg this morning but when i went to get her in she was hiding and wouldnt come out. I got her out eventually by crawling in with her, her bottom was filthy so i gave her a bath and cleaned her up but as i was drying her she laid another egg with a paper thin shell, then her bottom started turning inside out. Now shes not responding and hardly moving. Any advice on if i should put her down or wait and see what she is like in the morning?