How to indentify the 4 UK Grouse-species :
Wildlife Extra News - How to tell the four species of UK grouse
Wildlife Extra News - How to tell the four species of UK grouse
Any good Field Guide will do the trick too...
I've seen all four species in Scotland but I don't think all of them on any single visit.
Ptarmigan and Red Grouse are easy. Black Grouse used to be easy but not so anymore. Caper is the hardest, they can be very reclusive and difficult to find.
Best I have managed is three in the same visit - the missing one being Ptarmigan. That said, I have seen said species quite often so I cannot complain too badly.
Since the numbers crashed they are much harder to find and can be pretty inconspicuous too.
Despite many trips into the Highlands before and since, I have never seen the species again other than in captivity. I fear I may never do so.
I've only seen Ptarmigan (once in Iceland), and Black Grouse (two males at a lek site north of Glasgow). Quite an admission for one of my years.