question: What muscles do birds use to move their wings?
choices.text: Deltoid Muscles triceps crucial catching prey Abdominal Pectorals keratin
choices.label: A B C D E F G H
formatted_question: What muscles do birds use to move their wings? (A) Deltoid (B) Muscles (C) triceps (D) crucial (E) catching prey (F) Abdominal (G) Pectorals (H) keratin