Scientists found new nests of gyrfalcons. The birds “colonized” bridges of the road Obskaya — Bovanenkovo
16:26 31 мая 2019
Категории: News in English
Scientists found three new nests of the Yamal gyrfalcon on the bridge crossings of the Obskaya-Bovanenkovo railroad line. On different bridges the researchers met 21 grown-up birds.
Science knows only a few cases when gyrfalcons made nests on objects of technogenic origin. The first discovery dates back to 1956 — falcons occupied a crow’s nest in elements of an abandoned gold mine in Alaska. All subsequent cases of making nests were recorded on abandoned production objects, and on operating ones – only in Yamal. For the first time the egg-laying of the gyrfalcon on the railroad bridge of the Obskaya-Bovanenkovo line was discovered in May of 2014. Since 2016 the expedition on monitoring of the unique population of gyrfalcons has become regular.
Within the expedition, in addition to new nests, the scientists registered unsuccessful attempts of gyrfalcons to make nests on three bridges — one not hatched egg was found in each nest. Obviously, it happened due to natural decrease in the number of the main food this winter — the white grouse. The scientists set cameras on the inhabited nests. The automatic video cameras installed with help of the Russian center for exploration of the Arctic will help to detail the information as much as possible.
The gyrfalcon is the world’s largest species of falcons and the most expensive bird being used in falconry. It is included in the Red books of the International Union for conservation of nature, Russia and Yamal. This is one of the few birds that do not leave the Arctic for winter. They begin to lay eggs in April, when it is still frosty in the north. Gyrfalcons do not build nests themselves, but occupy nests of other birds (the crow, the rough-legged buzzard, the golden eagle, the white-tailed eagle and some others). Gyrfalcons are typical bird-eating birds of prey — the basis of their food consists of other types of birds, also they are able to get lemmings, voles and hares.
The scientific expedition was organized by “Gazpromtrans” with support of the governor of Yamal-Nenets Autonomous Okrug Dmitry Artyukhov and the department of external relations of the region.