Which agile predatory insect is noted on the Western Kingbird's prey catalog?
Answer
Robber flies
The presence of robber flies on the Western Kingbird's menu is specifically highlighted because robber flies are formidable predators themselves. Successfully capturing prey that is already agile and aggressive demonstrates the kingbird's superior visual acuity and swift reaction time required for effective aerial hunting. Targeting robber flies suggests that the kingbird is capable of pursuing and overpowering prey that might easily evade less visually acute or slower hunters, reinforcing their predatory skill within the insect hierarchy.
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