I would be more inclined to think that they have dry pox
Here is some information that you can read up on this
And also just to let you know.. stick fast fleas... only use olive oil and make sure you gently rub it on the upper eye lid as this is where they love to hide and can blind your birds.. and yes Frontline will get rid of them but you have to check them each week to make sure they don't get reinfected .. I find it easier to use the olive oil as this doesn't hurt the eyes and kills them within 24 hours.. they live in dry sandy soil
Avipoxvirus, DNA virus, also called “avian pox”
Begins with cutaneous form and goes to diphtheritic form (GI and respiratory).
It is a Virus
It is spread by direct contact with infected birds
Mosquitoes carry the virus from wild & other birds
Use mosquito management programs to help reduce the mosquito population
Direct contact through skin abrasions.
Mosquitoes may serve as mechanical vectors.
Clinical signs/Necropsy: Cutaneous – Wart like nodular lesions on un-feathered skin of chickens and head/upper neck of turkeys.
Lesions may also appear on feet, legs, around nostrils, and on eyelids.
Lesions become yellowish, progress to thick dark scabs, and may coalesce.
There are 2 main strains of the disease, the first appearing as greyish warty scabs on the comb, wattles and faces of the birds. The can result in serious disfigurement making such birds useless for showing. The second strain is more serious, causing cheesy substances to form in the respiratory passages, particularly the throat, which can cause death by asphyxiation
Low mortality, but decreased production.
Diphtheritic – Lesions on mucous membranes of part or entire digestive and respiratory tracts. Caseous patches or proliferative masses. High mortality.
Birds often recover from Fowl Pox but can remain carriers
Characteristic lesions. PCR is available.
Histo -- Eosinophilic cytoplasmic inclusion bodies in epithelial cells on microscopy. Infected cells are also enlarged, with associated inflammatory changes.
DDx: Infectious laryngotracheitis
Vaccinate soon after hatching up to 2 weeks of age. All should then be revaccinated at 12-14 weeks of age
A vaccine is available which is applied with a two prong needle into the flap of skin on the wing. Unlike Mareks Disease where the vaccine must be given at day old, Fowl Pox vaccine can be given to birds of all age
There is no sure cure, other than treating the scabs with iodine and scraping the muck out of the birds' throats and painting with iodine
Clear the eyes and beaks so they can see to eat and drink on their own, use warm water with a very weak solution of iodine in the water
If it’s Dry Pox
Treatment of bird
You need to isolate the bird and put it into an uncrowded area, remove the scabs around the mouth and eyes so the bird can eat and see
Dry Pox, has small yellow warts that appear on the wattles, comb and face
These increase in size as the disease spreads
Dark brown scabs form, and then drop off
To prevent secondary infections occurring you need to treat with 300 mg oxytetracycline (Terramycin) per gallon of drinking water for 3 days followed by vitamin supplement in the water, do not give the vitamins at the same time as the medication, one will cancel the other out
The good news is that the birds naturally recover in 2 to 4 weeks usually, and are then immune to this particular strain of the disease
But some remain carriers and may become reinfected during molt and other times of stress; thoroughly clean the housing the bird has been in to remove all the infective scabs that may have come off
Human and the Pox
Another bit of good news, is that "chicken pox" in humans is caused by a different virus that has nothing to do the chickens, so no human health risk is involved
Now... if its Wet Pox
Treatment of the bird
The bird may have a thick discharge that interferes with its breathing, so clear the airways with cotton swabs coated with iodine, otherwise just treat it the same as dry pox
Swab lesion with Lugol’s solution of iodine
Wet Pox, has yellow cheesy lesions in the mouth and in the windpipe
Vaccination is recommended in areas of large mosquito populations
At least now you know what it is, Betadine is a good iodine to use on the sores
Make sure the birds are getting fresh water every day, and fresh clean food every day
With taking the antibiotics, your bird may get diarrhea, give it some yoghurt plain and unsweetened (live culture) will bring the bowel back into a normal function, mix 2 tablespoon with some dry food every day for the next 2 weeks
Pox supportive treatment for blind birds
If it is Pox.
Supportive treatment is all you can do.
If there are any that are blind, put them in a small area, make sure they can all find waterers and feeders, make sure you don't move them once they are all familiar with where they are. Leave them in peace and quiet as much as you possibly can to reduce stress, you do not want a cocci outbreak to complicate things.
Standard treatment for Pox is nothing, as in DO NOTHING, they will recover, and a fatality from dry Pox is quite rare.
The good news is, once they have recovered they are immune to that particular strain of Poxvirus and will never catch that again.
Treat your mosquito population; this is what is causing the outbreaks
Unless you bring in new birds from somewhere, where the Pox is of a different strain, you may very well never see this in your birds again
I have never seen or heard of any waterfowl with Pox