That does indeed appear to be a red mulberry Dennis, I have two or three of the red variety and two Blacks, we even manage to get to pick some of the fruits (the animals share begrudgingly but with five
trees so far), I think the birds and squirrels get full or tired of eating the berries.
The white mulberry is the only variety I am lacking, but I've had one of them before and didn't really care for the flavor as much as I do the red and black varieties.
Redhawk