I imagine so mate.but surely the main aim of any species changing.is to adapt to the environment.to make eating easier or catching prey etc.
This is an interesting read... would the birds with a different type of beak end up eating different food.which over generations could change there body structure.similar to evolution.so thinking along them lines.could virus's be to blame for evolution..
Mystery of Bizarre Bird Deformities May Be Solved
WWW.NATIONALGEOGRAPHIC.COM
For two decades, bird experts in Alaska have been puzzled by the twisted beak