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Coordinator: Albert de Jong Merijn Loeve Roland-Jan Buijs Thijs Horst Leon Kelder Mars Muusse |
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partner 1: | May 28th, 2021: hybrid cachinnans type. | May 28th, 2021: hybrid cachinnans type. | . |
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May 28th, 2021: hybrid cachinnans type. | May 28th, 2021: hybrid cachinnans type. | . | |
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partner 2: | May 28th, 2021: partners + 2 pulli. | May 28th, 2021: Herring type. | . |
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May 28th, 2021: Herring type. | May 28th, 2021: Herring type. | . | |
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Visits and data.
Date: | details: | ||||
23-4-2021 | 2 eggs in nest. | egg no: | width (mm): | length (mm): | volume (cm3): |
A egg | 50.2 | 74.8 | |||
B egg | 49.3 | 72.3 | |||
Attempt to trap adult at nest. Failed. | |||||
14-5-2021 | 3 eggs in nest. | ||||
20-5-2021 | 3 eggs in nest, 1 egg is hatching. | ||||
28-5-2021 | 1 dead chick (2 days old). No sign of others. | ||||
Camera-trap: 2 chicks at nest. | |||||
Camera-trap: one partner is adult Herring Gull, one partner is possible hybrid Herring x Caspian Gull. https://waarneming.nl/observation/223644428/ | |||||