Gulls to the Horizon

A blog about gull observations by a Dutch larophile

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Monthly Archives: April 2013

New Caspian Gull ID pages on Gull Research.ORG

April 23, 2013 identification larus cachinnans 2cy review Leave a comment

Black-headed Gull nest building

April 21, 2013 behavior chroicocephalus ridibundus chroicocephalus ridibundus adult nest building Leave a comment

Trip Report: Glaucous-winged Gulls in Seattle

April 17, 2013 Larus Glaucescens Larus Glaucescens adult Leave a comment

San Diego Trip Reports

April 16, 2013 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
Database
Primary pattern differences between juvenile European Herring Gulls and Lesser Black-backed Gulls - 20140707
About me
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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