Which tree species are essential vegetative components associated with Willow Warbler habitat preferences?
Answer
Birch, alder, and willow
The habitat niche requirements for the Willow Warbler revolve around specific vegetative components that provide canopy structure and foraging opportunities. The text specifically identifies birch, alder, and willow trees as key species associated with the areas where this bird thrives. These elements, combined with adequate low ground cover, define the preferred environment for establishing territories and building nests.

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