This is the first detection of P. japonica anywhere in North America. Carlen & Munshi-South 2020 find that the city's building landscape is helping feral pigeon gene flow here, contrary to the case of rats (see ).
For the first time, P. japonica has been found in North America. According to Carlen and Munshi-South (2020), the city's built environment is contributing to the spread of pigeon genes, unlike rats (see note).