Cracker butterflies are a neotropical group of medium-sized brush-footed butterfly species of the genus Hamadryas. They acquired their common name due to the unusual way that males produce a "cracking" sound as part of their territorial displays.
The California pipevine swallowtail butterfly was once a species close to extinction. Now, thanks to California Academy of Sciences aquatic biologist, Tim Wong, the butterfly species is repopulated again.
How one man repopulated a rare butterfly species in his backyard
How beautiful! Blue morpho butterflies congregate on a tree. There are over 80 species of butterflies in the genus Morpho. They are tropical butterflies found mostly in South America as well as Mexico and Central America.