I have seen quite a bit of this in my area, many will readily and freely cross breed with the wild turkeys.
It is a numbers thing, the way I FEEL about this is if you have 10 - 14 domesticated turkeys that are established on your property this is enough for the social turkey rafter. Often times the matriarch hens will not allow any adult additions to the flock.
When a turkey does not have a home or know where its range is and is added to your social flock, they will persist and eventually be accepted, you will see them immediately identify the inferior tom hen or group and start to hang out with them, this sets their social position and allows for a smoother transition often times they will start a fringe group given enough outcasts and this will initiate a clear distinction and occasional "gang wars" upon removal of the outcast tom the outcast flock will re-establish itself to the main flock. If a wild turkey does come into your established social turkey flock they will not persist, often times they are quite clever with what they want. I find that wild hens fancy bourbon red toms and readily mate with them. (though I did have a BR tom that despised the bronze) after they have gotten what they want they usually clear out.
Free range and Wild turkeys usually return to their same roost every night. It is likely that once you establish an adequate roosting location for your new flock they will continue to return to the same roost unless they hatch poults. If you find that a wild turkey starts to use the same roost, you will need to run it off. If your turkey roosts in the wrong place, the best way to fix that is to make sure it awakes on the roost of your choice. this can be accomplished by capture during the day (when they are not at the top of a 200 foot Douglas fir) holding them until night then place them on the appropriate roost.
The other issue you will discover is that your flock will "stray" as far as necessary to acquire the appropriate nutrition. Don't allow your birds to lose focus by not providing them with a complete diet.
If the pair you have turns out to be a pair of hens, you MUST get a tom, all of the above has no bearing on that scenario.
If you only have one Tom he will likely find another Tom,
Keep us informed on this issue, also, what type of heritage turkeys have you bought
During the brooding stage of their lives, make sure you ineract with them and they are in a high traffic area (especially if it is only two) you may look at getting more turkeys (even if they are not heritage breed)
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