came to light), Sykes's warbler (the first three records, from 1959, 1977, and 1993, accepted in 2003), Iberian chiffchaff (the first two records, from 1972 and 1992, accepted in 2000), and Hume's leaf warbler (the first 27 records, the earliest from 1966, accepted in 1998). Occasionally, decisions have been delayed due to non-ornithological factors, such as the loss by the Royal Mail of a file on Britain's first lesser short-toed lark. The first three field records of Blyth's pipit, including an atypical pale individual on the Isles of Scilly, proved difficult, but following the occurrence of trapped individuals, on Fair Isle in 1993 and Suffolk in 1994, these were accepted. Some records of citrine wagtail and short-toed treecreeper were accepted only after prolonged consideration. Prior to the publication in 1984 of Jonsson and Grant's stint identification paper, a number of stints (Calidris) proved difficult to assess; a paper covering four such cases was published in 1986. It included accounts of a bird on Fair Isle, originally thought Britain's first red-necked stint that turned out to be a sanderling; and a bird in Suffolk, The "Felixstowe stint", which most observers at the time believed was a western sandpiper, but was in fact a semipalmated sandpiper. A previous paper details four early claims of red-necked stint, none of which were acceptable. As of 2007, records of Wilson's snipe (from 1985 and 1998), elegant terns (from 2002), a number of eastern whitethroats and lesser whitethroats, and several apparent North African common chaffinches, are still under consideration. Problematic seabird records BBRC has had particular problems with a number of rare seabirds. The "Chalice petrel", a dark-rumped storm petrel seen and photographed in the Southwest Approaches in 1988, and believed by its observers to be a Matsudaira's storm petrel, was eventually rejected as other similar species could not be ruled out. Martin Garner and Killian Mullarney subsequently wrote a critical review of this decision, arguing that the evidence points to the bird having been a Swinhoe's storm petrel, the only dark-rumped storm petrel species otherwise recorded in the North Atlantic. They argued that the Seabirds Advisory Panel's assessment of the record was at fault, and a critical reappraisal of the evidence should have been prompted by the (then relatively recent) discovery in the North Atlantic of Swinhoe's storm petrel, and that the committee was instead too heavily swayed by the views of a single expert.