Academic interest in rewilding is moving from commentary to discussion on future research agendas. The quality of rewilding research design will be enhanced if it is informed by knowledge of the rewilding practice. Here, we describe the conceptual origins and six case study examples of a mode of rewilding that emerged in the Dutch Delta and is being promoted and supported by Rewilding Europe, an umbrella organization established in 2011. The case experiences presented help position this version of rewilding in relation to the US 3C's version and point towards a rewilding action philosophy characterized by pragmatic realism and pioneer projects around which multiactor networks interested in policy innovation and change form. We argue that scaling-up the models of rewilding presented is constrained by institutional cultures and will require innovations in conservation finance and business models. Nonetheless, we suggest that the expanding European Rewilding Network and associated facilities, such as the European Wildlife Bank, represent a valuable asset for natural science research, aimed at exploring the ecological impacts of grazing and the relationship between role of restored herbivore guilds and biotical expansion, and for social science research investigating concepts such as non-human agency and autonomy. Lastly, we ask applied scientists to view rewilding as an uncertain and unfolding conservation approach and to refrain from seeking to specify it as a management approach supporting the delivery of pre-determined targets and/or ideals. This is because such actions may constrain the transformative potential of rewilding practice.This article is part of the theme issue 'Trophic rewilding: consequences for ecosystems under global change'.
Keywords: ecological restoration; institutional change; nature conservation; nature-based solutions; network governance; rewilding.
© 2018 The Author(s).