We studied willow ptarmigan in a montane panorama in Lierne municipality in central Norway. Throughout the research we captured and marked a complete of 272 willow ptarmigan from 2015 to 2021. To seize the birds, we approached them from snowmobiles in the course of the winter evening, dazzled them with spotlights after which captured them with dip-nets. We then geared up the captured birds with a VHF transmitter with roughly 30 months battery life, and monitored them by use of VHF triangulation by foot, skis, or snowmobile, and infrequently by plane. This methodology enabled us to trace the survival of particular person birds all through the research interval.
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