(1961–63), Denzil D. Harber (1963–66), F. R. Smith (1966–75), J. N. Dymond (1975–77), J. O'Sullivan (1977–78) and Mike Rogers (1978–2006). At least one (usually the longest-serving) record-assessing member retires every year, to balance experience with "new blood". The committee usually nominates its own replacement candidate, but also invites nominations from others, and if any are received, holds an election among county bird recorders and the bird observatory network. A set of criteria for membership has been developed—currently, these are "a widely acknowledged expertise in identification, proven reliability in the field, a track record of high quality submissions of descriptions of scarce and rare birds to county records committees and BBRC, considerable experience of record assessment, the capacity to handle the considerable volume of work involved in assessing upwards of 1,000 records per year and the capacity to work quickly and efficiently". The following 69 individuals have served on BBRC in a records assessment capacity: A number of other individuals have served as the committee's statisticians, museum consultants, archivists and avicultural consultants, or on the Seabirds Advisory Panel or RIACT. The committee has stated that it has a desire to be made up of members of "all age ranges and both sexes"; however, all BBRC members to date have been male, a fact reflected in the nickname "the ten rare men". Measures exist to ensure that the committee has a geographic balance amongst its membership—BBRC's constitution states that it "should attempt to provide a reasonable geographical spread with members having a detailed knowledge of each of the following areas: Wales, Scotland, Northern England, the Midlands, the Southwest and the Southeast of England". Documentation of records, including the members' deliberations, are kept in the committee’s archives, which are deposited with the British Trust for Ornithology. Some older data is missing, as the committee's files were originally held by the editors of British Birds, and they were not transferred to the new owners of the magazine when it was sold in the 1960s. Annual report and other publications The committee publishes an annual report on the rare birds occurring each year, in British Birds. This has usually been in the issue published in November of the following year, although the 2007 Report appeared in the October 2008 issue, and the committee has said that it plans to keep to this new timescale in future years. The report typically begins with an introduction, summarising