Author Archives: Maarten van Kleinwee

Visit to the gull colony of IJmuiden – 20190506

5CY Lesser Black-backed Gull Green YBXJ with sub-adult plumage – 20190506

Visit to the gull colony of IJmuiden – 20190429

Lesser Black-backed Gull Green YBJB primary pattern update – 2019

Visit to the gull colony of IJmuiden – 20190423

Visit to the gull colony of IJmuiden – 20190415

Adult Lesser Black-backed Gull Green YCKB and P9 mirror presence – 2018/2019

Visit to the gull colony of IJmuiden – 20190408

Visit to the gull colony of IJmuiden – 20190329

Marked Birds Database – Version 2.3.0 available