Nick Upton / 2020VISION / Flock of young Common / Eurasian Cranes (Grus grus) walking and flying after two surrogate parents dressed in grey holding model adult crane heads. The Great Crane Project, Somerset, UK, September 201...

Nick Upton / 2020VISION / Group of recently released young Common / Eurasian cranes (Grus grus) running with their wings raised following a carer in a crane costume acting as a surrogate parent, Somerset Levels, England, UK, S...

Nick Upton / 2020VISION / Four young Common / Eurasian cranes (Grus grus) following two carers acting as surrogate parents out of their electric fenced, fox-proof enclosure, Somerset Levels, England, UK, September 2012

Nick Upton / 2020VISION / Group of recently released young Common / Eurasian cranes (Grus grus) feeding on grain scattered around adult crane models alongside a carer wearing a crane costume acting as a surrogate parent, Somer...

Terry Whittaker / 2020VISION / Konik horse (Equus caballus) two stallions fighting, wild herd in rewilding project, Wicken Fen, Cambridgeshire, UK, June 2011. Photographer quote: "Koniks are a rare Polish horse used as surrogate gr...

Nick Upton / 2020VISION / Common / Eurasian Crane (Grus grus) chicks, ten weeks, being taught to look for food on the ground by surrogate crane parent wearing grey smock and holding model adult head, with adult decoy in feedin...

Suzi Eszterhas / Orangutan (Pongo pygmaeus) caretaker with infant playing in tree during forest exploration and training program, Orangutan Care Center, Borneo, Indonesia

Nick Upton / 2020VISION / Group of young Common / Eurasian cranes (Grus grus) standing, drinking and feeding alongside a carer dressed in a crane costume acting as a surrogate parent, within a fox-proof initial release enclosu...

Nick Upton / 2020VISION / Group of recently released young Common / Eurasian cranes (Grus grus) walking with two carers in crane costumes acting as surrogate parents, Somerset Levels, England, UK, September 2012

Nick Upton / 2020VISION / Group of young Common / Eurasian cranes (Grus grus) being led out of a fox-proof enclosure by two carers in crane costumes acting as surrogate parents, Somerset Levels, England, UK, September 2012

Nick Upton / 2020VISION / Group of recently released young Common / Eurasian cranes (Grus grus) feeding on grain alongside two carers dressed in crane costumes acting as surrogate parents, Somerset Levels, England, UK, Septemb...

Nick Upton / 2020VISION / Group of recently released young Common / Eurasian cranes (Grus grus) feeding on grain scattered around adult crane models, alongside two carers dressed in crane costumes acting as surrogate parents,...