A few friendly (or even fellow-birder 😉) details, Éric
Re-
HBW’s plates favor *poliopterus*...
https://www.oiseaux.net/oiseaux/autour.a.ailes.grises.htmlThat doesn’t look like it! And yet… yes, the oiseaux.net photo is lighter. Let’s go with Grey-winged Kestrel, Meliarax poliopterus, but only if it’s an immature! What do you think? There’s a huge "dimorphism" between the adult and the immature, isn’t there!
We’re on the same page—it can only be an immature. As for dimorphism, it’s pronounced, even if there are worse cases, whether between immature and adult, non-breeding and breeding (Ruff), or especially male and female (many widowbird species).
...

Eurasian Hoopoe, African Hoopoe, *Hupupa epops*
The Eurasian Hoopoe, Upupa epops, is the Common Hoopoe. The African Hoopoe, Upupa africana, is indeed considered a full species by the IOC, but remains a subspecies for HBW, which notes: "Race africana also considered by some to be a full species on the basis of varying amounts of white in the wing and other minor differences in color pattern (possibly also between sexes), but linked to race senegalensis by intermediate waibeli." Expert debates that go way over our heads, but we can’t mix the two names...

Superb Starling, *Lamprotornis superbus*
Now it’s Superb Starling (still Superb Starling, Lamprotornis superbus). It’s one of birders’ favorite games to "split" (divide) species, lump them in seemingly arbitrary ways, and finally change genus names that date back to Linnaeus himself...
Have a great evening,
Bernard