The Observatory was established in 1949 and is a small part of the Gibraltar Point National Nature Reserve, which covers 1,100 acres of coastal dune scrub, saltmarsh and freshwater marsh on the coast of Lincolnshire. The Reserve is a Site of Special Scientific Interest, a Special Area for Conservation, a Special Protection Area, a Ramsar Site and a Eurosite!

Ringing has always been an integral part of species population monitoring and in the past has acted as a focus for the training of ringers through BTO ringing courses. Between 1949 and 1995 over 140,000 birds of 163 species have been ringed by the observatory. Most common migrants are trapped in good numbers, the most ringed species being Blackbird and Willow Warbler (13,000+ of each). Scarce migrants trapped have included: Arctic Warbler, Sardinian Warbler, Northern Waterthrush and American Redstart. Most areas of the reserve are accessible for ringing, with 2 Heligolands in the east dunes and another planned for trapping migrants on the storm ridge.

After a period of decline renewed interest in the work of the Observatory has led to an increase in ringing effort. The Observatory is always looking for experienced A-permit holders willing to help man the Observatory over the autumn passage period. The Field Station is open all year for group bookings, offering excellent facilities, including a library, laboratory and common room. Visiting groups are always welcome.