One of the most endangered birds in Switzerland are living near my home, sharing a region together with the Western Capercaillie.
The birds are quite big, but you can be lucky if you can see them. Wandering in the early light of a day and without staring on mobile devices or listening to music helps a lot ...
1st sight in the fog on an spring day, winter is a bit longer in those mountains, back in 2019 and far away:
Be aware to make not big noises and movement, akward the distance. With a few minutes of waiting, he was flying up to an three nearby.