But at least he was an evolutionist that recognizes false evidence when he sees it.
Why is this vidence "false", It happens, Industrial melanism occures and predation via birds alo happens. He should have poted Kettlewells maps in which he sed "pie diqgrqms" to portray polymorphic percentages from sampling stations all throughout the S UK and "favored Polymorphs" from industrial v non industrial areas can be seen in the maps. Later data, as the industrial areas have been cleaned via air pollution techniques, the percentage fvoring the lighter polymorphs has returned.
If you read What Paul Erhlich said (NOT the magic bullet Ehrlich), he stated that this was an example of ho predation can remove competing polymorph forms as more of a lab experiment in thge wild.
Weve all made that mistake here on A2k, and I take some responsibility when I ws chiding Gungasnake several years ago and may have lft an impression that this was natural selection in action when it was actually demoing predation and industrial melanism that favored already existing polymorphs. The genes for wing width nd melanistic coloring were already fixed. It would only b evolution if some of the polymorph became extinct nd others rose.