Realm: Terrestrial
Climate: Temperate
Biome: Boreal forests/Taiga
Central latitude: 52.297299
Central longitude: 104.275532
Duration: 5 years, from 1983 to 1987

59 records

20 distinct species

Across the time series Circus aeruginosus is the most frequently occurring species

Methods

We conducted the study in 1983-1987 from 20 March to 15 November since the first appearance of the birds up to the full completion of migration to this part of the Priangarye region on a plot with total area of 6 km2. Permanent survey route (6 km long) was paved in such a way as to intersect all the major habitats proportionally footprint by them. The route passed every 2-3 days the maximum gap between the accounting was 4 days (bad weather conditions). In one field season was conducted 65-70 counts passing 390-420 km. 685 species of birds of prey of 20 were accounted for during the period of observation. Original text: ?? ????????? ???????????? ? 1983-1987 ? 20 ????? ?? 15 ?????? ?.?. ? ??????? ??????? ????????? ???? ?? ??????? ????????? ???????? ? ???? ????? ?????????? ?? ??????? ????? ???????? 6 ??2. ?????????? ??????? ??????? ?????? 6 ?? ??? ??????? ????? ??????? ????? ???????????? ??? ???????? ??????? ??????????????? ?????????? ??? ???????. ??????? ????????? ?????? 2-3 ??? ???????????? ?????????? ????? ??????? ????????? 4 ????? (??????????????? ??????). ????? ?? ???? ??????? ????? ????????? 65-70 ?????? ??????? 390-420 ??. ?? ?????? ?????????? ?????? 685 ?????? ???? 20 ?????. Unit of abundance = IndCountDec, Unit of biomass = NA

Citation(s)

Melnikov, Y. I., Melnikova, N. & Pronkevich, V. V. (2000) Migration of birds of prey in the mouth of the river Irkut. Russian Ornithological Journal, 108, 3–17.