An international group of biologists attached temperature sensors to 45 nests belonging to three bird (wader) species during an expedition to the village of Sabetta on the Kara Sea coast in the Yamal-Nenets Autonomous Area, TASS reports citing the autonomous area's press service.

"The expedition was organized to monitor the birds' reproduction process under the constant challenge posed by predators. Temperature sensors were installed on 45 nests of three wader species — Temminck's stint, dunlin and the little stint. In 25 days, researchers will be able to say whether the nests were ruined or the chicks were hatched," the press service reads.

In addition, 15 waders were fitted with miniature light sensitive transponders to identify daylight-hours and the location of the birds. "Researchers hope to make a complete map of the Arctic birds' migration routes and wintering locations," the press service adds.

The next research expedition, conducted as part of international field studies of the Arctic ecosystem, will focus on rodents — lemmings and voles, and on Arctic fox burrows. Currently, 40 burrows are being monitored.

The international research staff includes specialists from the Scientific Center for Arctic Studies, the Arctic Research Center of the Institute of Plant and Animal Ecology at the Ural Department of the Russian Academy of Sciences and researchers from France representing GREA, the French Polar Institute and the University of Burgundy.