Those are two nice sticks, great find. While I have seen a few other sticks with subjects other that balls carved in them, I have a friend that did a bear he calls a bear in a tree.I am not familiar with a specific name for that type of carving. Your second stick May be diamond willow. While it has darkened over the years two basic colors are right and I do not know of any other sticks with those colors and those natural shapes.The wood is deformed into diamond-shaped segments.This is thought to be the result of a fungus which causes cankers to form in the wood in response to the infection.