Rock ptarmigan (Lagopus muta). Disclamer: this is what Google thinks :) Shot from relatively short distance (with 12-45 zoom lens, enlarged). Teriberka, Jun 2024. #nature #birds #photography #teriberka

@savvdm it's a ptarmigan! But for ID you might want to use iNaturalist, which specializes in distinguishing between dollar species and has a huge community of identifiers who will check the machine vision's guess.