I’ve been keeping racing pigeons for twenty-two years. I have a loft of thirty-eight birds in my back garden in Doncaster, I race with the local federation, and I take the health of my flock seriously in the way that anyone who has invested that much time and care into something tends to. In twenty-two years I’ve dealt with most of the common pigeon health issues at one point or another — respiratory infections, canker, worms. Coccidiosis, until last spring, had never been a problem in my loft.
Last spring it was a problem.
Recognising the Problem
The signs came on gradually, which is how coccidiosis tends to present. A few birds looking slightly off — less active than usual, not eating with their normal enthusiasm, droppings that weren’t quite right. Nothing dramatic, nothing that screamed emergency, but enough that I was watching carefully.
By the end of the first week, three birds were showing more pronounced symptoms: weight loss, lethargy, and the characteristic loose, greenish droppings that experienced fanciers will recognise immediately. I’d seen coccidiosis in other people’s lofts over the years and I knew what I was looking at. I also knew that coccidiosis spreads quickly through a loft if you don’t address it promptly — the oocysts are shed in droppings and picked up by other birds, and in a confined loft environment the transmission is rapid.
I needed to treat the whole loft, not just the affected birds, and I needed to do it quickly.
Why Harkers Coxoid Specifically
Harkers is a name that every serious pigeon fancier knows. They’ve been producing treatments specifically for pigeons for decades, and their products are used by fanciers at every level from backyard hobbyists to national champions. When experienced people in the pigeon community talk about coccidiosis treatment, Coxoid is the name that comes up consistently.
The Harkers Coxoid Coccidiosis Treatment is a liquid formula administered via the drinking water, which is the most practical delivery method for treating a whole loft simultaneously. You don’t need to handle each bird individually — you add the correct dose to the drinker, the birds medicate themselves as they drink, and the treatment reaches the whole flock consistently. For a loft of thirty-eight birds, this is the only practical approach.
The 500ml bottle size was the right quantity for my loft. The dosing rate means a 500ml bottle covers a full treatment course for a loft of my size with some left over for a follow-up if needed. I’d rather have slightly more than I need than run short mid-treatment.
I found it in the Pet Medicine and Pet Supplies collections. It arrived the following day.
The Treatment Course
I followed the dosing instructions carefully — the label is clear about the concentration and the treatment duration. I removed the plain water drinkers and replaced them with the medicated water, ensuring the birds had no alternative water source during the treatment period. This is important: if birds can access untreated water, they’ll drink less of the medicated water and the treatment won’t be effective.
I also cleaned the loft thoroughly at the start of the treatment — removing droppings, disinfecting the floor and perches. Treating the birds without addressing the environmental contamination is only half the job; the oocysts in the loft environment need to be reduced to prevent reinfection.
By day three, the three most affected birds were showing improvement. Droppings were firming up, activity levels were increasing. By day five, all three were eating normally. By the end of the treatment course, the whole loft looked healthy — active, eating well, droppings normal.
The Outcome and Lessons Learned
The loft recovered completely. I lost no birds. The racing season, which I’d been worried about given the timing of the outbreak, was not significantly disrupted — the birds were back to full fitness within two weeks of the treatment course ending, and I had a reasonable season despite the setback.
What I learned from the experience:
- Act quickly. Coccidiosis spreads fast in a loft environment. The moment you see the characteristic symptoms — lethargy, loose greenish droppings, weight loss — treat the whole loft immediately rather than waiting to see if it resolves. It won’t resolve on its own.
- Treat the environment as well as the birds. The oocysts in the droppings are the source of reinfection. A thorough loft clean at the start of treatment is as important as the medication itself.
- Keep Coxoid in stock. I now keep a bottle in my medicine cabinet at all times. The cost of having it available immediately is trivial compared to the cost of a day’s delay while you wait for delivery when birds are sick.
- The liquid formula is the right delivery method for a whole loft. Individual dosing of thirty-eight birds is not practical. Water-based treatment that the birds self-administer is the only sensible approach for a loft of any size.
The Difference It Made
I kept my loft. That’s the honest summary. Coccidiosis in an untreated loft can be devastating — young birds especially are vulnerable, and a severe outbreak can cause significant losses. Acting quickly with an effective treatment meant the outbreak was contained and resolved before it became a crisis.
Twenty-two years of keeping pigeons and this was my first serious coccidiosis outbreak. I hope it’s my last. But if it happens again, I know exactly what to reach for and I’ll have it on the shelf already.
If you keep pigeons and you’re seeing the signs of coccidiosis in your loft, don’t wait. The Harkers Coxoid Coccidiosis Treatment is the trusted, proven option that experienced fanciers rely on. Browse the full Pet Medicine and Pet Supplies collections for more pigeon health essentials.
Treat the whole loft. Clean the environment. Act fast.
Your birds will thank you for it.
Brian Stokes is a retired electrician and pigeon fancier based in Doncaster. He has kept racing pigeons for twenty-two years, races with his local federation, and takes the health and welfare of his loft of thirty-eight birds very seriously.
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