The black-capped speirops is a species of bird in the family Zosteropidae. It was previously placed in the genus "Speirops". It is endemic to São Tomé and Príncipe.
Similar species: Perching Birds
By Thibaud Aronson
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Uploaded Feb 8, 2022. Captured Dec 30, 2017 12:49 in 9G2R+288, Neves, São Tomé and Príncipe.
comments (9)
Off the top of my head, I'd rule out anything only found say, in Venezuela or Somalia, because of safety concerns. Then you'd have species that are endemic to single tiny islands in the Indo-Pacific or the Southern Ocean, requiring 3 flights or more to even get to said island. Same goes for anything endemic to a single tropical mountain range, far from any airport.
And then you have a good number of rare, poorly understood species, like some pelagic seabirds, nomadic birds of the Australian deserts, and of course a bunch of skulking rainforest species (gamebirds, canopy-hunting raptors, ground-cuckoos, etc), especially in equatorial Africa and Asia. Those are the ones that would confound even a dedicated birder because even spending significant amounts of time in the right habitat is no guarantee of ever seeing those birds!
All in all, I have no idea how many species that would actually add up to, but a rough guesstimate would be 1000, maybe 1500? Posted 3 years ago