Who introduced the genus *Phylloscopus* to which the Willow Warbler now belongs?
Answer
Friedrich Boie
The current genus placement for the Willow Warbler, *Phylloscopus*, was established by Friedrich Boie. This taxonomic grouping was introduced by Boie in the year 1826. The genus *Phylloscopus* is notable for encompassing approximately 80 species of similar warblers that primarily engage in insect foraging. This specific placement helps delineate the species from others it might be confused with, like the Chiffchaff, even though morphological differences can be minimal, requiring examination of features like leg color or primary projection.

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