Natural Selection is not about fitter genes or fitter alleles. It is about how changes in ecology determines changes in species. That is what the science of evolution needs to say to make scientific sense.
Genes do not control. They are not persons who can think and act.
The problem is that Dawkins never defines what is “the best use of their environment.” If he did explore what was the best use or the best way for alleles to relate to the environment, then this would add a whole new dimension to evolution that I have been suggesting and others have demonstrated. Dawkins believes that genes determine the species, overlooking the truth that organisms cannot live in a hostile environment.
A careful examination of the evolution of birds indicates that the K?T extinct e4vent was the not the only thing that caused climate change at this time. The climate was becoming colder before the event. The event was the death blow to the non-bird dinosaurs, but the change was coming in any case.
Interesting thing was happening in that while the bird dinosaurs were becoming smaller, the nonbird dinosaurs were actually ge4tting larger. Both trends appear to be adaptions to colder weather. Feathers are a good insulation and were also an adaptation to colder weather. Science needs to be based on facts, not theory.
Ecological Natural Selection guides evolution by rewarding the best combination of traits. It does not create changes, but uses the resources available to do the job when possible which is not always the case. Research shows that that pocket mice have black heir genes and brown hair genes just as we do. This is how they are able to adapt as their environment does.