Yellow-legged
Gull - Larus michahellis
(last update: October 08 2013)
Coordinators:
Delfín González
Gabriel Martín
Antonio Gutierrez
Amir Ben Dov
Mars Muusse
presumed hybrid Yellow-legged Gull michahellis x Herring Gull argenteus M.T 1CY-4CY, August 2013, December 2014 & March 2016, the Netherlands. Picture: Herman Bouman & Merijn Loeve & Mars Muusse.
Offspring from mixed colony at Wijk bij Duurstede, where Herring, Lesser Black-backed, Caspian and Yellow-legged Gulls breed in small numbers. This bird is from hatch year 2013.
Known chick from parents unringed Yellow-legged Gull michahellis x Herring Gull argenteus tibia black RW. Ringed at Amerongen Sluizencomplex, in a mixed colony of argenteus, graellsii, michahellis and cachinnans.
below: presumed hybrid Yellow-legged Gull michahellis x Herring Gull argenteus M.T 1CY, August 15 2013, Utrecht, the Netherlands. Picture: Herman Bouman.
Juvenile bird very much resembling michahellis.
presumed hybrid Yellow-legged Gull michahellis x Herring Gull argenteus M.T 2CY, December 09 2014, Barneveld waste dump, the Netherlands. Picture: Merijn Loeve.
In appearance still closer to michahellis than it is to argenteus.
presumed hybrid Yellow-legged Gull michahellis x Herring Gull argenteus M.T 4CY, March 02 2016, Barneveld waste dump, the Netherlands.
In appearance still closer to michahellis than it is to argenteus: yellowish legs and vestiges of immaturity near black rather than faded brown.
