is this mites or caused by poopy bottom?

[Meg22]

I have 4 Light Sussex hens about a year old. A couple of them have had slightly poopy bottoms since being let out to free range about a month ago. droppings are mostly normal but sometimes quite wet.

Yesterday and noticed one has an area of missing feathers below vent and the skin looks inflamed. I couldn't see any sign of mites on her. I checked the roost for red mites a couple of hours after they went to bed last night and didn't see any there either (Wiped roost with white paper).

Today I have given them all a thorough check and bathed them to clean bottoms. They have all informed me that they are not ducks and the only water they want is to drink. 1 of them has "dirt" around base of feathers (not the one with feather loss).

They are all acting normally. Eating well, growers pellets with oyster shell separate. small amount of scratch or sunflower seeds when they come back to the coop. only change in diet is the worms and other things they find free ranging. Egg laying is normal for them.

I have been out today to get something to treat mites. I was able to get diatomaceous earth and ivemectin spot on for pigeons. I can't seem to get permethrin here.

Is this mites?
How should I treat it?
What can I do to prevent poopy bottoms?

I'll post pictures off my phone in a minuet.

Thanks in advance for your help.

 

[Meg22]

Photos from 2 hens. Feathers are wet from bathing in first picture.

 

[Shadrach]

Not sure what has caused this. There are a number of possibilities.
Don't bother with the DE.
It's getting very difficult to get Permethrin for chickens in the UK but this is what I use.
https://www.purpleturtle.co.uk/product/lifesystems-ex4-clothing-treatment-350ml-10727/

For coops this works. Don't use this on the chickens.
https://www.amazon.co.uk/Net-Tex-Ready-Total-Liquid/dp/B003L6LUIQ/ref=sr_1_15?keywords=ivermectin+treatment+for+chickens&qid=1636490237&sr=8-15&th=1

Dirty bums tend to attract lice rather than mites. I pick the lumps off once they hardened because as you say, when it comes to chickens water is for drinking.
You can trim the feathers below the hens vents which may help.

If your birds have depluming mite then Ivermectin is the only solution I know of that should work. You have I take it got Harkermectin (?)

 

[Shadrach]

The redness could be cause by the uric acid in the poop that was stuck to the feathers.

 

[Meg22]

Not sure what has caused this. There are a number of possibilities.
Don't bother with the DE.
It's getting very difficult to get Permethrin for chickens in the UK but this is what I use.
https://www.purpleturtle.co.uk/product/lifesystems-ex4-clothing-treatment-350ml-10727/

For coops this works. Don't use this on the chickens.
https://www.amazon.co.uk/Net-Tex-Ready-Total-Liquid/dp/B003L6LUIQ/ref=sr_1_15?keywords=ivermectin+treatment+for+chickens&qid=1636490237&sr=8-15&th=1

Dirty bums tend to attract lice rather than mites. I pick the lumps off once they hardened because as you say, when it comes to chickens water is for drinking.
You can trim the feathers below the hens vents which may help.

If your birds have depluming mite then Ivermectin is the only solution I know of that should work. You have I take it got Harkermectin (?)

Yes I got harkermectin.
Do you use the purple turtle spray directly on the chickens?

 

[Meg22]

The redness could be cause by the uric acid in the poop that was stuck to the feathers.

Could be. Her bottom was quite clean today but could have become irritated before. She's so fluffy you can't see the missing feathers when she's walking around.

 

[Shadrach]

Yes I got harkermectin.
Do you use the purple turtle spray directly on the chickens?

Yes. I know it reads only for clothes but the only active ingredient is Permethrin at at 0.49%. I've used it on my own skin without problems (long story).

You used to be able to get this.
https://www.amazon.co.uk/Menforsan-Insecticida-Desodorante-Roedores-125-ml/dp/B01MY0JK9U