Looking for birch trees

It's actually cold this morning. As usual I opened the windows when I came downstairs to the studio...a few moments later I needed to put on a sweater. It feels like September already.This morning I'm digging through my pile of photographs trying to find pictures of tree...particularly birch trees, in the autumn. I decided I want the new elk painting that I started over the weekend to have an autumn feel to it...but I can't remember how birch leaves are shaped. Oh well. If I can't find the photos that I'm sure I took at Father Hennepin State Park, I can always look them up on the web.