What are staple food items in the Willow Warbler's primary diet?
Answer
Small caterpillars and aphids
The staple components forming the bulk of the Willow Warbler's daily intake are identified as small caterpillars and plant lice, commonly known as aphids. These soft-bodied insects are easy to catch and digest, offering the necessary quick energy boost for the bird's high-activity lifestyle. While the diet is varied and includes flies, spiders, and small beetles, caterpillars and aphids are highlighted as the most frequently encountered items that form the foundation of their nutritional needs throughout the breeding season.
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