|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Coordinator: Albert de Jong Merijn Loeve Roland-Jan Buijs Thijs Horst Leon Kelder Mars Muusse |
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| partner 1: | May 28th, 2021: hybrid cachinnans type. | May 28th, 2021: hybrid cachinnans type. | . |
![]() |
![]() |
||
| May 28th, 2021: hybrid cachinnans type. | May 28th, 2021: hybrid cachinnans type. | . | |
![]() |
![]() |
||
| partner 2: | May 28th, 2021: partners + 2 pulli. | May 28th, 2021: Herring type. | . |
![]() |
![]() |
||
| May 28th, 2021: Herring type. | May 28th, 2021: Herring type. | . | |
![]() |
![]() |
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/ | |||||