Thermosensitive units in the tongue and in the skin of the duck's bill.
D000818:Animals; D001502:Beak / Q000294:innervation; D004372:Ducks / Q000502:physiology*; D005930:Glossopharyngeal Nerve / Q000502:physiology; D012867:Skin / Q000294:innervation*; D013823:Thermoreceptors / Q000502:physiology*; D014059:Tongue / Q000294:innervation; D014276:Trigeminal Nerve / Q000502:physiology