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Upcher's warbler is an uncommonly seen palearctic migrant to dry country in northeastern Tanzania from November to April. Note the black tail with narrow white edges, bi-coloured bill, and the black lore smudge. The top photo (Simanjiro) Is courtesy of Amos Pampy Hardecker. The 2nd row photo (Lake Natron) is courtesy of Thibaut Chansac. The bird in hand was on the Maasai steppe and the 4th row bird, on the Asogati Plain, both courtesy of Paul Oliver; the lower photo, also Asogati Plain.
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