What kind of TREE, grows things almost identicle in every way to black berries. Except there are tens of thousands of them. The unripe ones are red and the ripe ones just like blackberries in every detail are black. It is not a shrub or bush of any kind it is a 45'+ tree.

This may be an obvious and stupid question to many, but it's the first one, I've ever seen.

Mulberry tree possibly? Not sure the range of them but we have them here in illinois. Sounds like what you are describing

Is it growing in a swamp or wet area? Whats the bark look like?

No Jim, it's a dry area. Whats the bark look like.hmmm Didn't study it that closely. Nothing unusual. I'll take a pic next time out. It's right beside a stand I set up.

it might be a great place for a trail camera , maybe up in your stand pointing down just to see whats feeding on them.[:-]

Sounds like a wild cherry tree.

sounds like a mulberry to me..only berry yielding tree i can think of...

takes some pics of the tree and the berrys....they are good eating!! birds love them...not sure if deer eat them..id imagine they might, but dont know.

I would have to say Mulberry, oh, and they are quite tasty, pick the dark ones, also, they will stain everything they touch. I grew up eating out of a Mulberrry tree.

http://www.crfg.org/pubs/ff/mulberry.html

It's got to be a Mulberry tree. They are very good to eat when they ripen. Birds and other wildlife will eat them. I'm sure that deer will eat them too.