Which habitat loss caused the Vermilion Flycatcher to decline in the lower Colorado River valley?
Answer
Cottonwood-willow riparian habitat
The reduction of cottonwood-willow riparian corridors, largely resulting from changed water management practices, led to a significant decrease in the population of these birds in their historically established stronghold. This loss of essential nesting vegetation and water access forced the species to move or decline in that specific region.
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