Hokankai- yes, she is pooping. And don't worry, no need to dilute with these wounds, they NEED to be debrided as there is a thin layer of slime/necrosed tissue over top. I actually was able to do a fairly thorough job with hubby's help!
I put the HP in an asepto syringe thy I just happened to score at work the other day (and almost turned down.. Oh, the irony!).. I jetted it up under those maggots and they poured out. Then took the hose on jet setting (gently but firm, of course)and got a lot more out (also rinsig away the HP

). By then the HP had loosened some of the top layer and I was able to yank some of it off, along with some straggler feathers in my way/in the wounds. She fought pretty good twice so we let her rest but over all she did fantastic!
After all the irrigating, I was able to get my (gloved, of course) fingers all up in the wounds and slathered them in ointment while picking straggler mags. Two of them have very intact edges and two others have very slight tunneling to one side, but loose tunneling and only a fingertip depth, running parallel with the skin, not deep INTO it, so there was nothing I didn't reach and there is nothing more than I'd say 1/4in deep.
After about thirty minutes I went out and more maggots were running for their lives so I dug around a bit more with some sterile qTips and was able to spread the ointment around again. She tolerated that great and enjoyed a scrambled egg while i worked.
Last time I checked no more mags coming out so I'm taking that as a good sign.
When I lift the flap above the vent, the vent itself looks great. No swelling, nice light pink color and moist.
:deep breath: I'm hoping this was the worst of the cleaning. I'm thinking I may do at least one more round with the HP maybe tomorrow evening to reach those shallow tunnels again.