Martin, I'm having to warn you about debating in good faith.
You are not showing why the changing bat population would make a difference to the topic being discussed.
Another question of course is if "information" provided by neodarwinists is sufficiently enough to back hypothesis of "bird selection". I am just studying problem from many views and considerations, so I am prudent of making any conclusions.
This has been answered. Do not ask again.
I would like to know if carbonaria in all polluted areas
1) preexisted
2) migrated
3) arrosed via mutation from typica.
This has also been posted at least once.
If you continue to run around in circles and over the same material then you will be suspended for a day or so to give you time to read the replies to you.