Montagu's Harrier (Circus pygargus) is one of the four harriers occurring in Poland. Its number is approximately 1,500 pairs. It is most numerous in the east and central part of the country. It inhabits wet meadows, sedges, peat bogs and vast fields of cereals and rape in the agricultural landscape. This bird of prey is slightly smaller than the Buzzard. While gliding over the fields, it characteristically folds its wings in the shape of the letter "V". Male and female are significantly different from each other in appearance. The male is gray with red lines on the wings and belly, and the tips of the wings are black, and the female is brown with a white spot on the upper tail. Young Montagu’s Harriers are similar to females, but have a rusty underside as shown in the accompanying video. Montagu’s Harriers hunt rodents that destroy crops, and farmers can enjoy higher yields. However, the habitats of this bird of prey are threatened by drainage and overgrowing of wetlands and the destruction of nests during harvest. The observation of Montagu’s Harriers in Roztocze is a great joy.