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Coordinator: Albert de Jong Merijn Loeve Roland-Jan Buijs Thijs Horst Leon Kelder Mars Muusse |
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location: | May 28th, 2021: unringed adult Caspian Gull cachinnans (female type) near nest. Pulli moved out of camera view. | ||
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pulli: | May 14th, 2021: pullus r[K.W]. | May 14th, 2021: pullus r[K.X]. | May 14th, 2021: pullus r[K.Y]. |
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prey: | May 14th, 2021: Roach 2x. | May 20th, 2021: Roach 2x. | May 20th, 2021: Roach 2x. |
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Visits and data.
Date: | details: | |||||
23-4-2021 | 3 eggs in nest. | egg no: | width (mm): | length (mm): | volume (cm3): | |
A egg | 50.7 | 70.0 | ||||
B egg | 50.9 | 71.7 | ||||
C egg | 50.3 | 74.6 | ||||
Attempt to trap breeding adult. Adult Caspian Gull cachinnans trapped, but escaped. | ||||||
14-5-2021 | 3 pulli in nest. | metal: | tibia: | mass (gr): | head + bill: | tarsus: |
Prey: Roach 3x. | NLA 5.556.728 | Red K.W | 73 | 48.0 | 27.5 | |
https://waarneming.nl/observation/214663776/ | NLA 5.556.729 | Red K.X | 87 | 52.9 | 29.8 | |
NLA 5.556.730 | Red K.Y | 81 | 52.5 | 30.4 | ||
20-5-2021 | 3 pulli in nest. | metal: | tibia: | mass (gr): | head + bill: | |
Prey: Roach 2x. | NLA 5.556.728 | Red K.W | 204 | 62.7 | ||
https://waarneming.nl/observation/214709851/ | NLA 5.556.729 | Red K.X | 271 | 69.0 | ||
NLA 5.556.730 | Red K.Y | 256 | 69.0 | |||
28-5-2021 | Camera trap near nest: 1 unringed adult. https://waarneming.nl/observation/224226824/ | |||||