Sigh. The sparrows of the field in all their finery do not get wormed either.
How long do those free range peas live? How do you know? What's the parasite load on the birds? What's "get by just fine" mean?
Do you worm your horses? Did your mother make sure you got your shots? Is your dog vaccinated against rabies?
An unfortunately high number of dogs and cats never get vaccinated against rabies, but manage never to catch it due to fortunate lack of exposure. Largely because extensive vaccination efforts keep rabies down to a minimum these days. But the disease is as deadly as ever when exposure occurs.
Have you talked with your vet and your ag teacher about preventative meds for your peafowl?
I don't know I know she has had the same white male since she started. I don't know. They don't die. Yes we worm our horses, yes I have my shots and our dogs and cattle are vaccinated as well as our horses. Our vet said Safeguard horse wormer paste 1cc orally. My ag teachers know very little to nothing on peas. I don't chase my peas. If you get so close they won't stop watching you until you leave. Especially the hen she's the one with trust issues and the male will take food from the others when I'm no in the pen.