Mrocza

History

Mrocza was granted town rights by Polish King Władysław II Jagiełło in 1393. It was a private town, administratively located in the Nakło County in the Kalisz Voivodeship in the Greater Poland Province. Following the joint German-Soviet invasion of Poland, which started World War II in September 1939, the town was invaded, and then occupied by Germany. In October–November 1939, as part of the Intelligenzaktion, the German gendarmerie and Selbstschutz carried out mass arrests of local Poles, including the town's mayor. Arrested Poles were then murdered by the Germans in large massacres, including in nearby Paterek. The Germans also carried out expulsions of Poles, and in 1942, they renamed the town Immenheim to erase traces of Polish origin, however the historic name was restored after the German occupation ended in 1945.

Most-observed species

• Common Crane

  Grus grus (Linnaeus, 1758) · Aves
  97
• Common Raven

  Corvus corax Linnaeus, 1758 · Aves
  95
• Mute Swan

  Cygnus olor (J.F.Gmelin, 1789) · Aves
  77
• Gray/Purple Heron

  Ardea cinerea Linnaeus, 1758 · Aves
  71
• Mallard

  Anas platyrhynchos Linnaeus, 1758 · Aves
  70
• White-tailed Eagle

  Haliaeetus albicilla (Linnaeus, 1758) · Aves
  63
• Great Tit

  Parus major Linnaeus, 1758 · Aves
  62
• Common Buzzard

  Buteo buteo (Linnaeus, 1758) · Aves
  61