Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull argenteus 0M adult, May 2014, Stuwencomplex Amerongen, the Netherlands. Picture: Merijn Loeve.

Stuwencomplex Amerongen is an inland location with mixed species breeding in this colony: graellsii, argenteus, michahellis and cachinnans. Both breeding adults and juveniles are ringed by Roland-Jan Buijs and his ringing team. Pieter-Geert Gelderblom, one of the participants, puts much time in following the ringed juvenile birds to check which parents they belong to. Few pairs consist of mixed parents, with hybrid offsprings.

Blue 0M, adult Herring Gull. P10 with broken sub-terminal band on the outerweb. No mirror on P9. Small black spots on P5. P1 growing, P2 missing. PMS= 3, 2100000000. Pink legs. Short tongue on underside P10. Yellow orbital ring, Speckling 0-1%, no black on bill, red on lower mandible, yellow gape.