Herman Bouman: LGGB 1cy
Herman Bouman: YLG 1cy
Herman Bouman: YLG 1cy
Herman Bouman: YLG 1cy
Herman Bouman: YLG LBBG 1cy
Herman Bouman: Herring gull / Larus argentatus / Zilvermeeuw and Lesser black-backed gull / Larus graellsii / Kleine mantelmeeuw 2cy
Herman Bouman: Herring gull / Larus argentatus / Zilvermeeuw and Lesser black-backed gull / Larus graellsii / Kleine mantelmeeuw 2cy
Herman Bouman: Caspian gull - Herring gull / Larus cachinnans - L argentatus / Pontische meeuw - Zilvermeeuw 4cy
Herman Bouman: Yellow-legged gull / Larus michahellis /Geelpootmeeuw 4cy
Herman Bouman: Yellow-legged gull / Larus michahellis /Geelpootmeeuw 2-4cy
Herman Bouman: Yellow-legged Gull 4cy / Greater black-backed gull / Yellow-legged Gull 2cy / Lesser black-backed gull 3cy
Herman Bouman: Glaucous gull / Larus hyperboreus / Grote burgemeester 2cy
Herman Bouman: Caspian gull / Larus cachinnans / Pontische meeuw
Herman Bouman: IMG_1440
Herman Bouman: Caspian gull / Larus cachinnans / Pontische meeuw [G]-XEEV
Herman Bouman: Caspian gull / Larus cachinnans / Pontische meeuw [G]-XEEV
Herman Bouman: Caspian gull / Larus cachinnans / Pontische meeuw 3cy
Herman Bouman: Caspian gull / Larus cachinnans / Pontische meeuw 1cy
Herman Bouman: Yellow-legged gull / Larus michahellis / Geelpootmeeuw ad
Herman Bouman: Yellow-legged gull / Larus michahellis / Geelpootmeeuw ad
Herman Bouman: Herring gull / Larus argentatus / Zilvermeeuw ad [R] HN27
Herman Bouman: Herring gull / Larus argentatus / Zilvermeeuw ad [G] FAZR