Common cranes have recolonised England through natural expansion and assisted reintroduction, with welfare monitoring central to conservation success.
At small population sizes, the welfare of individual cranes has population-level significance. A breeding pair losing chicks to predation fails to contribute to population growth in that season. Chick protection from foxes through targeted predator management during the flightless period directly improves individual welfare and population recovery simultaneously. Monitoring pair productivity provides welfare-relevant data on individual breeding success.