Darwinian Observations

The Height of trees and the placement of branches is very intriguing. There is an evergreen tree with blue berries on it in front of me. Stretched across the the branches are some thin dead vine-esque strands. They resemble garlands on a christmas tree. I believe they are older dead branches that have wilted and been caught by the strong living branches. It seems that natural selection has let this happen to further attract birds to the tree. The dead branches would seem to be perfect for a bird's nest. The berries, which would feed the birds and spread the seeds around, exist inches from these dead branches.