It would seem so, but at the same time an Eastern European (Ivan fits) coming to the UK to work as a farm labourer (again, fits) might not necessarily have the same knowledge on such practices as we do. Benefit of the doubt just in case, I think.
Ivan, are you asking whether you should change your bird's perch because it has poo on it, or what? I don't quite understand lol If you are, then yes - just change it. Simple really?! You work on a farm - cut some nice Hazel branches or similar and use those. Natural, better for the bird's feet, they look nicer and they're FREE.
