Peacocks are beautiful birds that you can keep to beautify your homestead. You need to make sure that they are free from parasites.
Fleas are insects that search for and attack any preferred animal of their choice. Each type of flea will have a specific host species that it prefers.
If your peacocks may have gotten some fleas, it would be best if you treated your them with an approved poultry pesticide.
If you notice that your peacocks are sick, contact your vet so that they can find what is wrong and also give good veterinary advice.