They can either be yellow, like the males of their ... and their caterpillars are extremely fast moving. The giant swallowtail is the largest swallowtail butterfly in the U.S., with a wingspan ...

The Most Popular Swallowtail is Common in Backyards The eastern tiger is one of the most common and well-known swallowtails in the U.S. Here's a fun fact—this yellow butterfly has even made an ...

A Michigan House bill aims to designate the black swallowtail butterfly as the official state butterfly, highlighting its prevalence and beauty.