Which arthropod classification, Araneae, represents a consistent, non-insect food source for the Willow Flycatcher?
Answer
Spiders
Spiders, classified under Araneae, are explicitly identified as a consistent, non-insect arthropod food source that contributes to the Willow Flycatcher's diet. While insects form the vast majority of their sustenance, spiders provide a reliable intake of arthropods that are not insects. The text notes that gleaning behavior, rather than strictly aerial pursuit, is likely employed to efficiently harvest these resting spiders from foliage surfaces alongside stationary caterpillars.
Related Questions
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