"Hoopoes (/ˈhuːpuː/) are colourful birds found across Africa, Asia, and Europe, notable for their distinctive "crown" of feathers. Three living and one extinct species are recognized, ...
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though for many years all of the extant species were lumped as a single species—Upupa epops. In fact, some taxonomists still consider all three species conspecific. Some authorities also keep the African and Eurasian hoopoe together but split the Madagascar hoopoe." - (en.wikipedia.org 01.07.2021)