As of 2017, the following reviews are underway: a review of past records of Macaronesian shearwaters, reviews of all claimed Nearctic cackling goose records, a review of great white egrets to establish if any are of the Nearctic race, a review of sandplovers, a review of records of the eastern race of common redstart, a review of Orphean warbler records aimed at determining the race of each, and a review of subalpine warblers to determine which individuals are ascribable to the race "albistriata". It has also been suggested that reviews should be conducted of records of great snipe, as older records show a very different temporal occurrence pattern than more recent birds, the large numbers of gull-billed tern records from the English south coast from the 1960s, and desert wheatears, to establish racial identifications.