White-tailed ptarmigan The species name "leucura" was for a long time misspelt "leucurus", in the erroneous belief that the ending of "Lagopus" denotes masculine gender. However, as the Ancient Greek term "λαγωπους" is of feminine gender, and the species name has to agree with that, the feminine "leucura" is correct. The species name "leucura" is derived from the Latinized version of the Greek "leukos", meaning "white" and "oura", meaning "tail", in reference to the bird's permanently white tail. The white-tailed ptarmigan is the smallest of the ptarmigans and the smallest bird in the grouse family. It is a stocky bird with rounded
Arctic Report Card video that summarizes the Report Card. In 2015, Arctic sea extent at the end of the winter was the lowest during the satellite record and the winter maximum occurred 15 days earlier than in the past. The sea ice minimum at the end of summer was the 4th lowest extent on record. These changes are having profound impacts in both the marine and terrestrial ecosystems and in sea surface temperatures. Arctic Report Card The National Oceanic and Atmospheric Administration's Arctic Report Card presents annually updated, peer-reviewed information on recent observations of environmental conditions in the Arctic relative to historical records.