The successful reintroduction of extinct or endangered flora and fauna feature on a new set of stamps.
The Eurasian beaver and pool frog are illustrated on the six stamps going on sale at post offices from April 17.
![Extinct or endangered species stamps](http://image.assets.pressassociation.io/v2/image/production/91e6209954db7dc955d3ed224137a36dY29udGVudHNlYXJjaCwxNTIzNTI5MjE3/2.35944453.jpg?w=640)
The sand lizard, large blue butterfly, osprey and stinking hawk’s-beard plant complete the set, illustrated by Wiltshire-based artist Tanya Achilleos Lock.
Royal Mail spokesman Philip Parker said: “When a plant or animal become extinct in a country, that does not have to be the end of the story.
![Extinct or endangered species stamps](http://image.assets.pressassociation.io/v2/image/production/a5d1cd7e9d0b9e54da9dab91a36fe7acY29udGVudHNlYXJjaCwxNTIzNTI5Mjgx/2.35944631.jpg?w=640)
“Our beautiful new stamps mark the skill and expertise of conservationists in reintroducing species back to their former environments.”
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