"Alan Vivien Hancock" was one of the early leaders of the Racial Preservation Society (RPS). He was formerly a member of the British Union of Fascists (BUF) which was formed in 1932 by ex-Labour Party (UK)/Labour government minister Sir Oswald Mosley and was a union of several small, extreme nationalist parties. Hancock formed part of a three man leadership team in the RPS who came from the BUF, alongside Ted Budden and Jimmy Doyle.

He was the father of Anthony Hancock (publisher)/Anthony Hancock and set up a printing press called Wilson Press in Uckfield.

More Alan Hancock on Wikipedia.

While 500 birds seems like a lot, in reality, it is insignificant to the mallard population.

These areas have been covered with wet snow that is now melting away, exposing it to mallards and other waterfowl that feed in fields.