Most of the ringing is done with mist nets but there is also a Heligoland trap for use when mist netting is not possible. The site has some 70 different mist net rides, although only about 50 are used on a regular basis. The Field Centre ringing room was purpose built and offers a level of comfort and space rarely equalled at other sites. By the end of 2016 the group had processed altogether over 218,000 birds of 145 species. More than 58,000 new birds had been ringed on the reserve and 115,000 processed; of those over 45,680 were caught as part of the CES scheme.
In common with all other bird ringing sites, Foxglove Covert carries out its work under the auspices of The British Trust for Ornithology (BTO) through whom each ringer must be licenced. The reserve is also a Constant Effort Site (CES). This effectively means that, in order to remove as many variables as possible, the same number of nets are erected in the same net rides on the same 12 days of the year for the same length of time. Because CES is always run in the summer months, ringing starts as early as 4am and continues for ten and a half hours.