A female Blackcap (Sylvia atricapilla) without cap

• Autores: José Luis Copete, Cristòfol Jordá-Sanuy
• Localización: Butlletí del Grup Català d'Anellament, ISSN 1130-2070, Vol. 10, Nº. 1, 1993, págs. 19-20
• Idioma: inglés
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• Resumen

  • Blackcaps Sylvia atricapilla have the forehead and crown, or cap black or red-brown, according to the sex. However, on 14.07.90 ot Vallvidrero (Barcelona, NE SpainJ, we trapped a femole with the crown uniform olive brown, like the general colour of coverts. This is the first description of on anomaly of this kind