Which recommended garden offering mimics the Whinchat's natural high-protein invertebrate meal?

Answer

Mealworms

To successfully attract the Whinchat, which is fundamentally an insectivore, garden offerings should focus on replicating its natural high-protein diet. The text strongly suggests that insect substitutes are the best approach for enticement. Among the options listed, mealworms are singled out as being highly attractive because they provide a concentrated energy and protein source similar to the small arthropods the bird naturally consumes during its brief summer stay.

Which recommended garden offering mimics the Whinchat's natural high-protein invertebrate meal?
dietbirdfaunainsectWhinchat