Ptarmigan (Lagopus muta millaisi) 

The boulders on the upper slopes of Bynack More resounded with Ptarmigan calls as we walked.  We were lucky enough to spot some of these arctic-alpine dwelling birds.  Their feathers looked to have begun to moult into their winter colours, triggered by the shortening daylight hours, but without any snow cover they weren’t yet as well camouflaged as they hopefully will be through the winter, when they will turn almost pure white.