What is the most popular non-seed supplemental food offered to attract cardinals?
Answer
Mealworms.
Mealworms are frequently cited as the most appealing supplemental offering, excluding standard seeds, utilized by backyard enthusiasts seeking to attract cardinals. These larvae of the darkling beetle provide an excellent, concentrated source of animal protein that closely mimics the soft-bodied insects cardinals naturally seek out when foraging in the wild, making them highly effective attractants.

#Videos
Cardinal and Oriole Feeding on Mealworms - YouTube
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