Our study is the first to demonstrate that wild bird populations in cities are reservoirs of bacteria resistant to many important human antibiotics. Professor Samuel Sheppard, Ineos Oxford Institute for antimicrobial research and Department of Biology, Oxford UniversityAMR occurs when disease-causing microbes such as bacteria become resistant to antibiotics that would otherwise kill them. * They looked at Campylobactor jejuni, a common diarrhoea-causing zoonotic bacteria found in birds’ gut microbiomes. Antimicrobial resistance occurs when disease-causing microbes such as bacteria become resistant to antibiotics that would otherwise kill them. The study ‘Proximity to humans is associated with antimicrobial resistant enteric pathogens in wild bird microbiomes’ has been published in Current Biology.