Nick Upton / Eurasian beaver (Castor fiber) entering the River Otter after release. Part of escaped population re-released to the wild following veterinary check ups. Taken on the second day of Beaver releases aft...

Nick Upton / Julia Coats of the Animal and Plant Health Agency releasing Eurasian beaver (Castor fiber) back into River Otter. Part of escaped population re-released to the wild following veterinary check ups. Tak...

Philippe Clement / Poitou donkey (Equus africanus asinus) with shaggy coat on the island Ile de Re, Charente-Maritime, France

Pete Oxford / Diane McTurk carrying a Giant otter (Pteronura brasiliensis) into the river, habituated, Karanambu Otter Trust for re-introduction, Rupununi, Guyana, Endangered species, August 2009

Andy Sands / European water shrew (Neomys fodiens) about to re-enter water with wet fur, Captive, UK.

Nick Upton / Great Crane Project team members Beate Blahy and Roland Digby inspecting Eurasian / Common crane eggs (Grus grus) in reed pool nest in Germany before collecting them for UK reintroduction programme. S...

Nick Upton / Roland Digby of the Great Crane Project team aerating Common / Eurasian crane (Grus grus) eggs in portable incubator on high speed train on return journey from Germany for the UK reintroduction progra...

Niall Benvie / Young male European lynx (Lynx lynx) in broadleaf woodland, Bohemia, Czech Republic.

Jean E. Roche / Oystercatchers taking off along shoreline {Haematopus ostralegus} Ile de Re, France

David Tipling / Large blue butterfly (Phengaris arion), female. Re-introduction programme. Somerset, England, UK, Europe

Yva Momatiuk & John Eastcott / California Condor (Gymnogyps californianus) immature bird flying with transmitter attached, critically endangered extinct in wild and recently re-introduced, 9-10 foot wingspan, Marble Canyon, Arizona

Adrian Davies / Sign warning drivers of Red squirrel (Sciurus vulgaris) crossing, Re-introduction project, Torridon, Scotland, UK. May 2018.