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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Adult Lesser Black-backed Gull Green YCKB and P9 mirror presence – 2018/2019
Visit to the gull colony of IJmuiden – 20190408
Visit to the gull colony of IJmuiden – 20190329
Marked Birds Database – Version 2.3.0 available
Visit to the gull colony of IJmuiden – 20190315

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Adult Lesser Black-backed Gull Green YCKB and P9 mirror presence - 2018/2019
Studying bill and eye characteristics in European Herring Gulls
Gull watching in the southern Lake Michigan region (USA) - 201402
Visit to the gull colony of IJmuiden – 20190408
About me
Marked Birds Database – Version 2.1.0 available
Great Black-backed Gulls and Herring Gulls - 20190215-16
Status update on the presence of pseudo-mirrors and non-isolated mirrors in IJmuiden-ringed adult European Herring Gulls
Gull behavior explained: Choking
Adult Lesser Black-backed Gull Green YAKU with tertial spots in 2018

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