Lesser Black-backed Gull (graellsii & intermedius)(last update: May 17 2015) |
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lbbg 1cy May lbbg 2cy January lbbg 3cy Jan-April lbbg sub-ad Jan-April lbbg adult January |
Lesser Black-backed Gull graellsii Y.BSX 1CY, July 07-22 2015, IJmuiden & Leiden, the Netherlands. Picture: Maarten van Kleinwee.Continental graellsii from this population are also referred to as 'Dutch intergrade', upperparts between medium grey British graellsii and dark grey Scandinavian intermedius. below: Lesser Black-backed Gull graellsii Y.BSX 1CY, July 22 2014, Leiden, the Netherlands. Picture: Maarten van Kleinwee.Juvenile plumage. Some 30 KM south of the colony already. below: Lesser Black-backed Gull graellsii Y.BSX 1CY, July 07 2014, IJmuiden, the Netherlands. Picture: Maarten van Kleinwee.Juvenile, processed when ringed. |