No worries , no offense taken and your correct mother nature is possible of anything however very unlikely at 10 months that their reproductive organs have even advanced enough to produce a egg fertile or not , this is just one of mother natures natural defenses that safe guards the survival of most species, and the egg in question from the looks of it is more likely to be a goose egg or it is possible that his peacock has mated with his turkeys and thats what he got a cross between the two which makes a very beautiful turkey. This I would find more likey then the other however anything is possible.
In all my years raising fowl, I have yet to see an actual turkey crossed with a peafowl, I have never even seen a picture of one that has not been photo shopped. The only thing I have ever witnessed a turkey crossed too, is another Turkey. I place the infamous turkey/peafowl hybrid in the same category as the rabbit/cat hybrid aka cabbit. Peas have been known to hybrid with guineas but this is extremely rare. Having said all of that, here is a pic of some eggs I just pulled from setting birds. We have a green hen that lays bleach white eggs, they are odd but hatch into gorgeous green peafowl. Hers is the egg marked abnormal, the egg in question above does indeed look like a smaller goose breed type and I put a Canada goose egg in there for comparison but, do not count the pea egg out of the equation.
Gerald Barker