Antibiotic resistance is not confined to people alone. Wildlife can also encounter and carry resistant bacteria, with birds picking them up from contaminated water, food, waste and other human-associated environments. As they move between habitats, they may spread these bacteria through their faeces, making them useful candidates in tracking the movement of antibiotic resistance in the environment. A new study of red-naped ibises in Udaipur, Rajasthan, has now found diverse bacteria in their faeces, including multidrug-resistant strains. The red-naped ibis is a common, resident, non-migratory wading bird that occurs across a range of habitats in and around Udaipur. It is also an opportunistic omnivore, consuming insects, amphibians, reptiles, small fish, livestock carcasses and occasionally plant material. The ibises have also been observed foraging at garbage disposal sites and on carrion. “It was not simply a matter of choosing a common and easily observable bird,” elaborates Vijay Kumar Koli, an assistant professor and in-charge head of the Wildlife Research Laboratory at Mohanlal Sukhadia University, Udaipur, and a co-author of the study. “Its year-round presence, broad habitat use, feeding behaviour and frequent contact with human-influenced environments make it a useful species for investigating how environmental bacteria and antibiotic resistance may circulate at the wildlife-human-environment interface.” Nesting trees of the red-naped ibis in Udaipur, Rajasthan. The bird is a common non-migratory wader that is found across the city. Image by Kanishka Mehta. Sampling the ibises The researchers collected 45 faecal samples between July 2022 and June 2023, with 15 samples collected during each…This article was originally published on Mongabay
