Gulls to the Horizon

A blog about gull observations by a Dutch larophile

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Marked Birds Database – Version 2.13.0 available

April 6, 2021 mbdb Leave a comment

First visit to IJmuiden Forteiland colony of 2021 season and returning birds with GPS loggers

April 3, 2021 larus argentatus larus argentatus adult larus fuscus graellsii larus fuscus graellsii 4cy larus fuscus graellsii adult 2 Comments

IJmuiden Gull Research Team season 2020 review

November 30, 2020 review Leave a comment

Marked Birds Database – Version 2.12.0 available

September 16, 2020 mbdb Leave a comment

Filming Lesser-Blacked Gull YDDD in flight and matching it with its GPS data

September 3, 2020 larus fuscus graellsii larus fuscus graellsii 1cy 3 Comments

Marked Birds Database – Version 2.11.1 available (fix for version 2.11.0)

August 29, 2020 mbdb Leave a comment

The return of Lesser Black-backed Gull Green YAPC – 20200827

August 27, 2020 larus fuscus graellsii larus fuscus graellsii adult Leave a comment

Marked Birds Database – Version 2.11.0 available

August 22, 2020 mbdb Leave a comment

IJmuiden Lesser Black-backed Gull GPS-project update – 20200814

August 14, 2020 GPS larus fuscus graellsii larus fuscus graellsii 1cy larus fuscus graellsii 2cy larus fuscus graellsii adult Leave a comment

Marked Birds Database – Version 2.10.0 available

July 19, 2020 mbdb Leave a comment

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Recent Posts

  • 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
  • IJmuiden Gull Research Team season 2021 review
  • IJmuiden Forteiland gulls on Dutch TV – 20211022

Archives

  • April 2023 (2)
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  • January 2016 (4)
  • December 2015 (2)
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Categories

  • American Herring Gull (10)
  • audouin's gull (1)
  • Baltic Gull (13)
  • Behavior (24)
  • Black-headed Gull (58)
  • Black-legged Kittiwake (2)
  • Books (1)
  • California Gull (3)
  • Caspian Gull (31)
  • Common Gull (22)
  • Database (66)
  • Glaucous Gull (6)
  • Glaucous-winged Gull (1)
  • Great Black-backed Gull (6)
  • Heermann's Gull (2)
  • Herring Gull (186)
  • hybrid HG x LBBG (3)
  • hybrid LBBG x HG (2)
  • hybrid LBBG x YLG (14)
  • hybrid YLG x HG (1)
  • hybrid YLG x LBBG (5)
  • Iceland Gull (15)
  • IJmuiden Forteiland Gull Team (4)
  • Kittiwake (1)
  • Kumlien's Iceland Gull (1)
  • Lesser Black-backed Gull (177)
  • Little Gull (3)
  • Mediterranean Gull (4)
  • News (1)
  • Publications (1)
  • Relict Gull (1)
  • Research (1)
  • Ring reading (2)
  • Ring-billed Gull (6)
  • Scandinavian Herring Gull (11)
  • Slaty-backed Gull (2)
  • Slender-billed Gull (1)
  • Sound recording (3)
  • Thayers Gull (6)
  • Travels (8)
  • Videos (1)
  • Viking Gull (1)
  • Western Gull (2)
  • Yellow-legged Gull (28)

Top Posts & Pages

  • Gull behavior explained: Choking
  • Studying bill and eye characteristics in European Herring Gulls
  • Gull behavior: the forward posture
  • Identifying nearly-fledged Herring Gulls and Lesser Black-backed Gulls in the field
  • The Mew Call
  • Lesser Black-backed Gull chicks - 20190603
  • Adult Scandinavian Herring Gulls in Stockholm, Sweden - 20150221
  • Marked Birds Database update - a new approach
  • Tertial spots in sub-adult and adult gulls
  • Primary pattern variation in individual European Herring Gull

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