I'm not a very educated person when it comes to tree care, but I love trees and try to do my best to take care of them. Anyway, the picture is of an unknown type of tree on my property that seems to decline a little each year. The picture shows a small portion but it's all over. It's quite a large tree, about 50 feet and I'd love to do something for it if I can. Any ideas? And I apologize if this is something obvious to everyone.