Wildlife field research involves capturing, marking, and monitoring wild animals — procedures that cause acute stress and sometimes injury that welfare-conscious researchers seek to minimise.
Field research welfare is often less scrutinised than laboratory welfare despite causing similar or greater acute stress to wild animals. Capture by trapping, darting, or netting causes panic responses and physiological stress regardless of how humanely subsequent handling is conducted. Marking procedures — from simple rings to surgical implants — vary from minimal to significant welfare impact. Researchers can minimise harm through: careful trap positioning and frequent checking, choosing less invasive marking methods, training in handling and anaesthesia, and designing studies to minimise capture frequency. Institutional animal ethics approval now commonly covers field research in most countries.