Judging the size of an isolated bird is difficult, but comparison with the grass leads to the conclusion that last month's mystery bird (plate 6 in colour, repeated here in black-and-white) is 'sparrow-sized', though noticeably slim, small-headed and long-tailed. The bill is conical, which suggests a sparrow Passer, finch (Fringillidae), bunting (Emberizidae), or perhaps even a lark (Alaudidae),


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