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The five most unique birds in the world

10,000 Birds

2014) — attempts to answer it by ranking species according to their “evolutionary distinctiveness,” or how distantly related they are to all other living birds. is not primarily a measure of the divergence dates of major clades of birds but rather of individual living species. ’s list.

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A Red-naped Sapsucker and a Townsend’s Warbler

10,000 Birds

In trying to find further evidence of the warbler’s behaviour and the sapsucker’s lifestyle, I found numerous mentions of Rufous Hummingbirds and “other species” coming to feed from sap wells. Does he vigorously defend his food source? Do warblers regularly visit sap wells?