Skokholm-Chris Perrins-bird ringing 1990
Skokholm - Heligoland Trap - 1960s Image3
Skokholm - 1960s Skokholm Britains first bird...
Skokholm - The Well Heligoland Trap in the 1960s
Skokholm - Wall Heligoland trap catching box -...
Skokholm - 1960's Heligoland wall trap
Skokholm Island - Garden Heligoland trap