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S. cantillans migrating during the day

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Old Saturday 30th March 2019, 19:29   #1
Miguel Berkemeier
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S. cantillans migrating during the day

In the last Thursday I saw several Sylvia cantillans migrating from the sea completely during the day (at 1pm) in Costa de Caparica (Portugal)! Some of them landed in the rocky groin, even over the mussels and seaweed! It was amazing and purely unexpected.

https://ebird.org/view/checklist/S54309949
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Old Saturday 30th March 2019, 19:36   #2
RafaelMatias
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Very interesting Miguel, congrats on witnessing this (I was aware of this already through the e-bird alerts). I think it's unprecedented for the region and I'd say it's something you shouldn't expect to see many times again!
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Old Saturday 30th March 2019, 23:25   #3
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Perhaps most likely birds that set out from Morocco aiming for Algarve, but carried too far west, and then reorienting. Once they are over the sea, they keep flying until they reach land - they have no option to stop migrating during daylight!

Here in NE England night-migrating birds like Turdus spp. arriving from Scandinavia frequently arrive during the day, as the North Sea is too wide for them to cross entirely at night.

Last edited by Nutcracker : Sunday 31st March 2019 at 16:44. Reason: typo (reorienting) :-)
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Old Saturday 30th March 2019, 23:44   #4
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PS the last photo on your ebird list "Possibly Anthus" is another warbler, perhaps Phylloscopus bonelli (contrasting greenish rump). Anthus species can be excluded because it does not have the long tertial feathers found on Anthus spp.
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Old Sunday 31st March 2019, 15:38   #5
Miguel Berkemeier
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Thank you both! :)
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