Stock Photo - 24 April 2021, North Rhine-Westphalia, Bad Oeynhausen: A blue tit sits on a branch. Photo: Marcus Brandt/dpa. - Bad Oeynhausen/North Rhine-Westphalia/Germany

Stock Photo: 24 April 2021, North Rhine-Westphalia, Bad Oeynhausen: A blue tit sits on a branch. Photo: Marcus Brandt/dpa. - Bad Oeynhausen/North Rhine-Westphalia/Germany.