Gulls to the Horizon
A blog about gull observations by a Dutch larophile
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Maarten van Kleinwee
Large primary pattern variation in Dutch Herring Gull YDAP over multiple seasons
Primary P4 and P5 pattern variation in Dutch Herring Gull YDBM over multiple seasons
1st-cycle Common Gull with ‘mirror’ on P10 – 20230712
Marked Birds Database – Version 2.14.0 available
Marked Birds Database Manual – Tracking breeding success
IJmuiden Gull Research Team season 2023 review
“Blond” juvenile Lesser Black-backed Gull Green YDRX
Images of (presumed) hybrid Herring Gull x Lesser Black-backed Gull Green YDJB
Primary P5 pattern variation in Dutch Herring Gull YBUF over multiple seasons
IJmuiden Gull Research Team season 2022 review
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