Last month's problem bird (plate 102, repeated here) was obviously a warbler, and the squarish tail, relatively weak bill and general appearance quickly eliminate other genera and identify it as a Phylloscopus. The elongated shape (in no way recalling Goldcrest Regulus regulus) and absence of any wing-bar immediately eliminates all thoughts of Pallas's P. proregulus, Yellow-browed P. inornatus or Pl

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