Black grouse lek, North Pennines (Catalogue No. 5320)
Black grouse lek, North Pennines (Catalogue No. 5326)
Black grouse lek, North Pennines (Catalogue No. 5330)
Black grouse lek, North Pennines (Catalogue No. 5341)
Black grouse lek, North Pennines (Catalogue No. 5368)
Black grouse lek, North Pennines (Catalogue No. 5742)
Black grouse lek, North Pennines (Catalogue No. 6417)
Black grouse lek, North Pennines (Catalogue No. 6421)
Black grouse lek, North Pennines (Catalogue No. 6435)
Black grouse lek, North Pennines (Catalogue No. 6439)
Black grouse lek, North Pennines (Catalogue No. 6455)
Black grouse lek, North Pennines (Catalogue No. 6509)