Ta on ainus maapinnal elutsev lind, kes elab saarestikus aastaringselt. Lumepüü alamliigina on Teravmägede asukas suurem ja raskem kui mandril elutsevad liigikaaslased ja ka rabapüü.
Svalbard rock ptarmigan (Lagopus muta hyperborea) is changing into winter plumage. It's the only land-inhabiting bird which resides in the archipelago throughout the year. Svalbard rock ptarmigan is a sub-species of the rock ptarmigan (Lagopus muta). It is larger and heavier than either the rock ptarmigan or the willow ptarmigan on mainland.
Sügis Teravmägedel 2012 / Autumn in Svalbard 2012
