Hi Vicky. Always nice to have you around!!!
Yes, as you say, bumpy red caruncles -- and in good quantity -- is what the standards want and demand.
There are APA standards for Blacks, Whites, Blues, and Chocolates--I know you know all this -- but not for anything else, as far as I've read.
There is no standard for the Wild Type Muscovy, other than what a wild muscovy looks like--and that is what the Wild Type refers too: both babies' and adults' appearance.
A Wild Type muscovy should have smooth, largely black caruncles, unlike the mutated Blacks, Whites, Blues, & Chocolates. Eventually white forewings with age, also........ A Wild Type muscovy having bumpy red caruncles, like our dear Dufuss, would not be the best example of a WT because of that
A Wild Type domestic muscovy has no manifest mutations. All other APA recognized varieties are the results of mutations. In fact, even the UNrecognized varieties are the result of mutations.
I say "no manifest mutations" because there are many mutations that are recessive; hence a beautiful Wild Type could actually be 'split bird' for many other color characteristics--a 'carrier' in other words, all the while being a picture perfect Wild Type.
BUT a WT scovy--duckling or adult--definitely does NOT have these mutations: limitation of black pigment; blue dilution; canizie. However, any baby or adult muscovy can display perfect Wild Type appearance and have at least one mutation of color at all the other sites, e.g. Lavender, Duclair, Barred, etc............ But that is probably highly improbable, eh?
I am no expert--heavens no!--but if you have the stamina, Vicky, I think I went into something about the Mallard thing re. babies in another of my long winded posts above
I find Dufuss an interesting little guy! Even if he needs a spankin' once in a while
YES, WE HAVE SIX NEW BABIES FROM BIRCH RUN FARM HERSELF!