Gulls to the Horizon

A blog about gull observations by a Dutch larophile

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Monthly Archives: December 2017

Marked Birds Database – Version 1.15.0 available

December 27, 2017 marked birds database Leave a comment

Marked Birds Database – Version 1.14.0 available

December 9, 2017 marked birds database Leave a comment

Reading ringed gulls in Leiden – 20171204

December 4, 2017 chroicocephalus ridibundus chroicocephalus ridibundus adult Leave a comment

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Recent Posts

Suspended primary moult in adult European Herring Gulls – 20190617
IJmuiden Lesser Black-backed Gulls fitted with GPS loggers – Update June 2019
Progression in Lesser Black-backed Gull chick growth – 20190614
4cy European Herring Gull Green YCDZ – May/June 2019
Adult European Herring Gull Green YCUZ with Thayeri-pattern on P9 and P10 – 20190703

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Identifying nearly-fledged Herring Gulls and Lesser Black-backed Gulls in the field
Studying bill and eye characteristics in European Herring Gulls
IJmuiden Lesser Black-backed Gulls fitted with GPS loggers - Update June 2019
Gull behavior explained: Choking
Fav photos
Visit to the gull colony of IJmuiden – 20190506
Adult Lesser Black-backed Gulls from the IJmuiden Forteiland colony fitted with GPS-loggers - 20190524
1cy Herring, Yellow-legged and Lesser Black-backed - 20130922
Suspended primary moult in adult European Herring Gulls - 20190617
1CY Herring Gull, Yellow-legged Gull and Lesser Black-backed Gull - 20140921

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