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Swifts on Cape Verde (1 Viewer)

Arbu

Well-known member
Are these Cape Verde Swifts or Common Swifts? Or another type of Swift?

I saw them on Boa Vista last week. Around Rabil there were a lot over the date groves. I also saw another pair flying low over the desert. They were all rather silent. ebird shows only one record of Common Swift on Boa Vista, but quite a few records of Cape Verde Swift. But these birds looked more like Common Swift to me, based on size, the throat patch and the well forked tail. So I'm uncertain.

Any thoughts?
 

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  • Rabil Swift 3.jpg
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Arbu

Well-known member
Very subjective but that seems to be a relatively shallow forked tail?

Yes, I suppose so. And the photos I see of Common Swift seem to show sharper ends to each fork than these birds.

Also there seems to be some paleness around the vent, which I'm not aware of being a feature on a Common Swift.
 

THE_FERN

Well-known member
The 4th picture shows wings which are thinner than any comparable common swift. Tail forks appear shallow but this is perhaps sometimes difficult to judge. Common seems to have a fork which is >= half the outer tail feather length.
 

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