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Coordinator: Albert de Jong Merijn Loeve Roland-Jan Buijs Thijs Horst Leon Kelder Mars Muusse |
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eggs: | April 9th, 2021. | April 9th, 2021. | April 9th, 2021. |
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partner 1: | May 14th, 2021: unringed Caspian Gull cachinnans. | May 29th, 2021: Caspian Gull cachinnans. | May 29th, 2021: female Caspian Gull cachinnans. |
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partner 2: | May 28th, 2021: Caspian Gull hybrid type. | May 28th, 2021: Caspian Gull hybrid type. | May 30th, 2021: Caspian Gull hybrid type. |
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June 4th, 2021: male Caspian Gull hybrid type. | |||
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pulli: | May 14th, 2021: pullus r[K.T]. | May 14th, 2021: pullus r[K.U]. | May 14th, 2021: pullus r[K.V]. |
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June 4th, 2021: 3 chicks. | June 11th, 2021: pullus r[K.U]. | . | |
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June 11th, 2021: pullus r[K.T]. | June 11th, 2021: pullus r[K.T]. | June 11th, 2021: pullus r[K.T]. | |
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June 11th, 2021: pullus r[K.U]. | June 11th, 2021: pullus r[K.U]. | June 11th, 2021: pullus r[K.U]. | |
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prey: | May 20th, 2021: Perch 1x. | June 4th, 2021: Russian Carp. | June 11th, 2021: Eel. |
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Visits and data.
Date: | details: | |||||
9-4-2021 | 2 eggs in nest. | egg no: | width (mm): | length (mm): | volume (cm3): | |
https://waarneming.nl/observation/210431163/ | A egg | 50.1 | 70.5 | |||
B egg | 50.3 | 71.5 | ||||
23-4-2021 | 3 eggs in nest. | egg no: | width (mm): | length (mm): | volume (cm3): | |
C egg | 50.0 | 68.6 | ||||
A egg | 50.5 | 70.3 | ||||
Attempt to trap breeding adult. Failed. | B egg | 50.2 | 71.4 | |||
14-5-2021 | 3 pulli in nest. | metal: | tibia: | mass (gr): | head + bill: | tarsus: |
https://waarneming.nl/observation/214663702/ | NLA 5.556.725 | Red K.T | 319 | 70.9 | 44.7 | |
NLA 5.556.726 | Red K.U | 272 | 70.2 | 42.2 | ||
NLA 5.556.727 | Red K.V | 164 | 62.2 | 36.2 | ||
20-5-2021 | 3 pulli in nest. | metal: | tibia: | mass (gr): | head + bill: | wing: |
Prey: Perch 1x. | NLA 5.556.725 | Red K.T | 675 | 88.1 | 105.5 | |
https://waarneming.nl/observation/214708986/ | NLA 5.556.726 | Red K.U | 606 | 85.7 | 98.0 | |
NLA 5.556.727 | Red K.V | 400 | 77.8 | 65.5 | ||
28-5-2021 | Camera trap near nest: 3 pulli & 2 unringed adults. Adults are Caspian Gull cachinnans. | |||||
https://waarneming.nl/observation/222467166/ | ||||||
4-6-2021 | No chicks present at visit, but 3 chicks today at camera trap! | |||||
Prey: Russian Carp! https://waarneming.nl/observation/216519972/ | ||||||
11-6-2021 | 2 pulli near nest. | metal: | tibia: | mass (gr): | head + bill: | wing: |
Prey: large Eel. | NLA 5.556.725 | Red K.T | 1162 | 125.0 | 331.0 | |
https://waarneming.nl/observation/216987685/ | NLA 5.556.726 | Red K.U | 1214 | 122.7 | 317.5 | |