An 1836 oil painting by Friedrich Bernhard Westphal (1803-1844) titled Der Möwenpreis [the seagull prize] in the Schleswig museum shows a seagull bounty hunt on Seagull Island in Schlei. Towards the right, in front of a post with white cloth tied to it are the musician Friedrich Adolph Mackrott holding a black-headed gull held raised in his left hand and to his right stands the city secretary, Benicken, wearing a bowler hat
Johann Casimir Benicken (1 August 1782 – 1 December 1838) was a jurist and judge from the Duchy of Schleswig who also took an interest in the birds and natural history of the region. He was also a city secretary (or town clerk) for the city of Schleswig, Duchy of Schleswig.
