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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 20th, 2021: male Caspian Gull. | May 20th, 2021: male Caspian Gull. | May 20th, 2021: male Caspian Gull. |
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partner 2: | May 20th, 2021: female Caspian Gull. | May 20th, 2021: male Caspian Gull. | . |
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pulli: | May 14th, 2021: pullus r[K.L]. | May 14th, 2021: pullus r[K.M]. | May 14th, 2021: pullus r[K.N]. |
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May 20th, 2021: 2 pulli (r-K.M is dead). | . | . | |
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prey: | May 14th, 2021: Roach/Rudd 2x. | May 14th, 2021: Roach/Rudd 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 | 49.1 | 68.3 | ||||
B egg | 48.8 | 70.6 | ||||
Attempt to trap breeding adult. Failed. | C egg | 49.7 | 70.7 | |||
14-5-2021 | 3 pulli in nest. | metal: | tibia: | mass (gr): | head + bill: | tarsus: |
Prey: Roach / Rudd spec. 2x | NLA 5.556.719 | Red K.L | 73 | 48.6 | 27.3 | |
https://waarneming.nl/observation/214662857/ | NLA 5.556.720 | Red K.M | 80 | 53.5 | 29.8 | |
NLA 5.556.721 | Red K.N | 96 | 53.6 | 29.2 | ||
20-5-2021 | 2 chicks & 1 dead chick (recent, r-K.M). | metal: | tibia: | mass (gr): | head + bill: | tarsus: |
Red K.M & metal 5556720 will be reused. | NLA 5.556.719 | Red K.L | 217 | 64.8 | ||
NLA 5.556.720 | Red K.M | 96 | 61.6 | |||
NLA 5.556.721 | Red K.N | 271 | 70.7 | |||
Camera trap near nest: 2 pulli & 2 unringed adults. | ||||||
https://waarneming.nl/observation/223638304/ | ||||||
11-6-2021 | 1 chick near nest. | metal: | tibia: | mass (gr): | head + bill: | wing: |
https://waarneming.nl/observation/216985629/ | NLA 5.556.721 | Red K.N | 880 | 109.5 | 271.0 | |