Rock ptarmigan (Lagopus mutus), a couple with summer-season feathering, NP Kalkalpen, August 2014

Droppings of rock ptarmigan (Lagopus mutus), NP Kalkalpen, August 2014

A couple of rock ptarmigan (Lagopus mutus) with winter feathering under the Grintovec peak, Slovenia 2013

A closer look to the male rock ptarmigan (Lagopus mutus) with almost complete winter feathering

Rock ptarmigan (Lagopus mutus)