April 15 - Common Shelduck 10, Eurasian Wigeon 40, Gadwall 4, Common Teal 8, Northern Shoveler 20, Red-crested Pochard 3, Tufted Duck 8, Common Goldeneye 7, Western Marsh Harrier 1, Northern Goshawk 1, Eurasian Sparrowhawk 1, Common Common Redshank 3, Mediterranean Gull 2, Black-headed Gull 70, Lesser Black-backed Gull 35, European Herring Gull 15, Common Tern 11, Common Wood Pigeon 2, Barn Swallow 2, Meadow Pipit 4, White Wagtail 3, Bluethroat 4, Sedge Vlietland: Common Buzzard 1.
15 april - Aalscholver 2, Zwarte Ibis 4, Knobbelzwaan 8, Blauwborst 1. 14 april - Fuut 5, Grote Zilverreiger 2, Krooneend 3, Kuifeend 8, Brilduiker 7, Bruine Kiekendief 1, Havik 1, Sperwer 1, Buizerd 6, Zwartkopmeeuw 2, Kokmeeuw 70, Kleine Mantelmeeuw 35, Zilvermeeuw 15, Visdief 11, Houtduif 2, Boerenzwaluw 2, Vlietland: Buizerd 1.ParaCrawl Corpus ParaCrawl Corpus