Indeed.
Darwinian processes at work.
Indeed, but not a particularly new idea. The idea of both modifying and evolutionary influences playing a part in urban settings is well known. See this 2007 report, for instance.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1852758/I would suggest that urban centres are a little like islands where flora and fauna either become extinct, manage to cling on or manage to flourish, either because of a successful modification of behaviour or useful evolutionary modifications or both. Hence,for instance, on islands, species often become smaller or larger in adjusting to local conditions(e.g. St Kilda wren, Darwin's finches), while in urban areas, adaptation of birdsong, for instance, seems to be phenotypical. In Minnesota, it seems that small urbanized mammals(shrews, voles, mice etc.) have experienced a jump in brain size.
One big difference, of course, between islands and urban areas, is the tendency for urban areas to change at a much faster rate than island environments.
