Synanthropic crow-like birds invasion diseases
Crow-like birds are increasingly beginning to nest in large numbers in the urban landscape. In many cities, the process of adaptation of these birds to new breeding conditions is close to completion, and the population downward trend is already being observed. The population density of crow-like birds in urban areas remains higher than in natural habitats. The results of the study of invasion diseases of synanthropic crow-like birds have been adduced in the article. Long-term data on synanthropic crow-like birds (rook Corvus frugilegus, jackdow Corvus monedula, hoodie Corvus cornix, magpie Pica pica) invasion diseases have been summarized. In particular, the 16 helminth species each were isolated out of rook and hoodie on the territory of Krasnodar Land. 26 jackdow endo- and ectoparasite species were found in Moldova. 14 helminth species and 15 ectoparasite species - 7 tick species and 8 chewing louse species - were noted on jackdow in the City of Vologda. The following invertebrate groups - spiders, ticks, springtails, Coleoptera, Hymenoptera, fleas, Diptera - have been noticed in the nests of crow-like birds. Ticks, springtails, chewing lice, fleas and Diptera have been found in the plumage of crow-like birds. The nests of crow-like birds serve them a breeding ground, and the birds themselves, and especially chicks - power supply and means of resettlement. The authors have noted that the high number of crow-like birds on the territory of settlements creates prerequisites for transmitting not only the invasion diseases, but also viral ones, dangerous for fowl and human. Thus, synanthropic crow-like birds are of great interest in the study of man-made territories parasitocenose. Conducting modern targeted research of the parasites of the rook, the hoodie, the jackdow, the magpie, as they are the main representatives of the settlements ornithofauna, is of great scientific and practical importance.