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September 10, 2025EnvironmentsOpen Access

Mercury Concentration and Distribution in Remiges, Rectrices, and Contour Feathers of the Barn Swallow Hirundo rustica

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Authors

LCLuca CanovaFMFederica MaraschiRARoberto Ambrosini

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Overview

Analysis reveals variation in mercury accumulation in barn swallow feathers, suggesting assessment implications for contamination monitoring.

Key Points

  • Mercury concentrations were highest in contour feathers and primary remiges of barn swallows, suggesting these feathers are useful for monitoring mercury burden.
  • In adults, median mercury concentrations were 1.03 µg g−1, with juveniles showing lower levels at 0.39 µg g−1, indicating age-related differences in accumulation.
  • Analysis included 12 feathers from 25 barn swallows that died in northern Italy, revealing that both adult and juvenile feathers carry distinct contamination levels.
  • The findings highlight the role of feather types in detoxifying mercury, supporting previous research on feather analysis as a reliable monitoring tool.

Cite This Study

Canova et al. (2025) studied this question.

synapsesocial.com/papers/68c1bd4854b1d3bfb60eee1ehttps://doi.org/10.3390/environments12070249
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