Data and Code for 'Reinforcement is not enough to establish a viable population of the globally threatened Aquatic Warbler Acrocephalus paludicola at the margin of its breeding range'

Abstract Population viability analysis is a valuable tool to guide the reinforcement of endangered bird species. In migrants, demographic data required for population projections are often deficient, making reinforcement outcomes challenging to predict. The globally threatened Acrocephalus paludicola (Aquatic Warbler) is a long-distance migratory passerine that breeds in sedge fen mires in Central Europe and winters in sub-Saharan Africa. In this study, we used integrated population models to determine the demographic parameters that contributed to the past decline, and then explored different management scenarios to identify which combination of reinforcement, habitat restoration, and survival improvement are required for achieving a stable population in the future. The files in this repository contain the data and analytical code to replicate the results of the publication in Ornithological Applications (DOI: WE DON’T KNOW THIS YET). The version contained in this repository does not include updates and improvements that occurred after 29 November 2025.