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Résumé :
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Almost 200 Siberian Accentors Prunella montanella were examined in the hand, the majority of these being passage or wintering birds in eastern China in autumn. In autumn, it is possible to age most Siberian Accentors in the hand. Differences in the pattern of juvenile and adult-type greater coverts are the most reliable feature, but supplementary characters involving the tertial pattern, tail feathers and iris colour are also described. If high-quality photographs are available, it should also be possible to use these criteria, with care, to age birds in the field. Owing to individual and subspecies variation, a cautious approach is recommended when sexing Siberian Accentors.
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