Gulls to the Horizon

A blog about gull observations by a Dutch larophile

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Monthly Archives: May 2018

4th-calendar year Lesser Black-backed Gull comparison – 20180518

May 24, 2018 larus fuscus graellsii larus fuscus graellsii 4cy Leave a comment

Adult Lesser Black-backed Gull Green YBJB – 20180514

May 14, 2018 larus fuscus graellsii larus fuscus graellsii adult Leave a comment

6CY Lesser Black-backed Gull Green YBMT with retarded plumage – 20180409

May 10, 2018 larus fuscus graellsii larus fuscus graellsii adult Leave a comment

Primary pattern variation in adult Herring Gull Green YBKC from 2015 to 2018

May 4, 2018 larus argentatus larus argentatus 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
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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