Lesser Sand Plover Charadrius mongolus comprises five subspecies:
pamirensis, atrifrons and schaeferi (collectively known as
the ‘atrifrons group’) traditionally characterised by jet-black forehead
in breeding plumage, and mongolus and stegmanni (together forming
the ‘mongolus group’) with white on forehead, in which respect they
resemble Greater Sand Plover. Even in breeding plumage, subspecific
identification of Lesser Sand Plover requires great caution, as wide
variation occurs within populations and intermediates are frequent. While
atrifrons and pamirensis are separable from the others as a
group, within that group variation from typical atrifrons to typical pamirensis
is clinal and some specimens from wintering grounds are therefore hard to
assign to one or the other. The sub-species of Lesser Sand Plover occurring in
the Eastern Province and Arabian Gulf is the subspecies C. m. pamirensis
. This subspecies is a larger, paler, short-billed race birds from the Pamirs
and neighbouring parts of Wakhan, Lahul, Ladakh and Kashmir, as well as from
the western Kun Lun, eastern Alai and Tien Shan in the western part of the
range of the ‘atrifrons group’. The photographs below were taken at
Damman / Al Khobar wader roost south where well over two hundred birds were
seen. Many were using the small pieces of vegetation as wind breaks and
although most were in winter plumage a few were starting to gain summer plumage.
The lack of full breeding plumage makes the birds difficult to assign to
sub-species but they are probably of the ‘altifrons’ group.