Butterflies......

We noticed while we were out on our porch last night that there were some monarch butterflies fluttering around & while I was showing Lydia, I looked closer & noticed there were loads of them in our trees out front.  I think there were at least 30 of them clustered together.... it was really amazing.  I've never seen so many at one time.  Evan just read a book on butterflies & I didn't realize that they migrate south for the winter like birds do, so we're wondering if that is what they were doing.  Nature is so cool, isn't it?