Anisorrectricilia en el Pinsà Fringilla coelebs

• Autores: Jordi Baucells Colomer
• Localización: Butlletí del Grup Català d'Anellament, ISSN 1130-2070, Vol. 7, Nº. 1, 1990, págs. 25-26
• Idioma: catalán
• Enlaces
  • Texto completo
• Resumen

  • The occurrence of anisorectricyly in the Chaffinch is quantified. From 1985 to 1991 a total of 1.800 birds, trapped in Osona (Catalonia, NE Spain) were examined. Four birds presented 13 rectrices and one bird presented 11 of them, which gives a percentage of occurrence of 0.28 %.