Why should enthusiasts avoid hard, caged suet blocks designed for woodpeckers when feeding robins?

Answer

These suet blocks require significant clinging ability.

Hard, caged suet blocks necessitate significant clinging ability, which robins, being perching birds, lack the anatomical configuration to sustain.

Why should enthusiasts avoid hard, caged suet blocks designed for woodpeckers when feeding robins?
behaviorbirdfeedingRobinbird feeder