sentence: Labels are placed on the wing of the butterfly.
sentences_before: Some organizations, such as the Cape May Bird Observatory, have Monarch labeling programs.
sentences_after: The labels have information on them. This helps scientists track the Monarchs during their migration. It also helps the scientists study the paths that the Monarchs take on their migration.
concept_name: label
headings: Monarch (butterfly) Relationship with humans
categories: Danaus