Gulls to the Horizon

A blog about gull observations by a Dutch larophile

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Monthly Archives: December 2012

Sound recordings and ring readings of Common Gulls

December 28, 2012 sound recording Leave a comment

Dutch Black-headed Gull sighted in Gran Canaria, Spain

December 10, 2012 migration 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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Marked Birds Database – Version 2.0.0 available
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Primary pattern differences between juvenile European Herring Gulls and Lesser Black-backed Gulls - 20140707
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Marked Birds Database - installation
Gull watching in the southern Lake Michigan region (USA) - 201402
1CY Herring Gull, Yellow-legged Gull and Lesser Black-backed Gull - 20140921
Marked Birds Database - Public release
Marked Birds Database - introduction
Adult Baltic Gulls, Stockholm - August 2015

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