Szukana fraza: [Abstract = "The study describes the development of the population of Magpies \"Pica pica\" in the city of Zielona Gora, western Poland, based on earlier reports and a recent count in 2016. In the first half of the 20th century, there were only 5\-7 pairs, corresponding to a density of 1.4 pairs\/km2. At that time 2\-3 pairs nested in the city center."]
