Antenna A butterfly has 2 antennae on its head. They are skinny with little knobs on the end.
Butterflies use their antenna to smell flowers, plants, and other butterflies.
A butterfly has two compound eyes - lots of little eyeballs grouped together. Each eyeball sees a little part of what the butterfly is looking at. It's like looking through a bunch of straws bundled together. Butterflies can see colors. Click here to see the sulfur yellow's eyes up close.