when was it?
1926
Cley Marshes
Cley Marshes reserve was created in 1926 when Norfolk birdwatcher Dr Sydney Long bought the land which now makes up the reserve for the sum of £5,100, to be held "in perpetuity as a bird breeding sanctuary". Long then established the Norfolk Wildlife Trust.

what is cley marshes? A nature reserve where is it situated? North Sea coast of England what is nature reserve era? The reserve was created when Dr Sydney Long bought the land to be held "in perpetuity as a bird breeding sanctuary".
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Cley Marshes [SEP] Nature reserve era
Further pools and hides were established during the 1970s, and a visitor centre was built in 1981 on the site of the current building. Over the long history of the reserve, it has had only three wardens, all from the same family. Robert Bishop was warden from 1926 to 1937, and was followed by his grandson, Billy, from 1937 to 1978. Billy's son, Bernard, who was appointed in 1978, is still managing the reserve.