‘In Defence of the Everybird’ Joe Moran
https://www.theguardian.com/commentisfree/2009/jul/24/pigeon-trafalgar-square-london-underground
‘In Defence of Pigeons’ Daniel Frazer
https://bklyner.com/in-defense-of-pigeons-bensonhurst
‘Feral Pigeons: Flying Rat or Urban Hero? Steve Harris
https://www.discoverwildlife.com/animal-facts/birds/feral-pigeon-flying-rat-or-urban-hero
‘Information about Pigeons’ London Borough of Richmond on Thames