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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Marked Birds Database – Version 2.0.0 available
1CY Leucistic European Herring Gull, brown aberration – September 2018
Marked Birds Database Manual
Marked Birds Database Manual – Working with life histories
Marked Birds Database Manual – Working with observers

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Head moult progression in Black-headed Gull White 4FH, winter 2014/2015
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Primary covert variation in 1st-winter Black-headed Gulls
Studying bill and eye characteristics in European Herring Gulls
Adult Lesser Black-backed Gull Green YBJB - 20180514
Marked Birds Database Manual - Using the Observation Details screen
Gull behavior explained: Choking
Marked Birds Database Manual - Working with life histories
Reading the newly ringed Black-headed Gulls in Zoetermeer - 20130629
New database project: working towards a new version

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