Wild Cherry Tree

[Broncosfan]

Planted a new cherry tree this year and it had a lot of blooms. I ended up with about 1/3 lb of cherries after pitting it was early. My older tree doesn't have as many and hasn't ripened yet. Today while mowing the grass I look up and find a wild cherry tree loaded with cherries. Never noticed the tree before it sits in behind some scrubs. It appears to be ready to pick. There not huge cherries but I think I can get enough to make a couple of pies. Anyone every use wild cherries to make a pie? I'm sure there sour as I tasted one but not sure it was at completely ripe.