need help identifiying this tree
I need help in identifying the tree that's in the house I bought recently in California. A landscaper said it was probably a walnut or hazel nut but he wasn't sure. There are a couple more trees nearby that he said were weeds, and they looked similar to this. Right now there are no flowers, so I don't know if it's a flowering tree. If anyone could identify the tree, I'd greatly appreciate it.