HOW MANY MORE?

A hungry weasel roams across a dreary land. Fallen trees are lying along the road that crosses the monotone landscape. The weasel reaches the last tree standing, kept alive by a flock of mocking birds. The tree is unstable and the birds work continuously to keep it upright. The weasel struggles to climb the unstable tree, but luckily for the birds, this requires a great deal of persistence and many failed attempts.