Lesser Black-backed Gull (graellsii & intermedius)
L. f. graellsii B+M December 12 2010, Landfill VRSU de Colmenar Viejo, Madrid, Spain. Picture: Delfín González.
Ringed 1cy graellsii, ringed in the U.K. PVC blue B+M with metal BTO, ringed at Bristol, Avon, UK, 51º27´N/02º35´Win summer 2010. Ringed by Peter Rock (pete.rock at blueyonder.co.uk).
Most scapulars replaced, except the feathers in the lowest row. US: 100%, LS: 75-99%, TOT SCAPS: 75-99%.
Wing-coverts and tertials juvenile, except one central mc and single llc replaced.