Stock Photo - The Eurasian blue tit (Cyanistes caeruleus) is sitting on the garden bird feeder in Letovice , Czech Republic, January 10, 2021. (CTK Photo/Petr Svancara)

Stock Photo: The Eurasian blue tit (Cyanistes caeruleus) is sitting on the garden bird feeder in Letovice , Czech Republic, January 10, 2021.