Female Eastern swallowtails tend to have more blue on the hindwings ... Grow these butterfly host plants to attract pollinators. Eastern swallowtail caterpillars are green with large yellow ...

In a new study, scientists pulled from a 35-year dataset to examine long-term population trends of the federally endangered ...

Swooping over meadows and pausing on blooms, swallowtails draw attention with their large size and striking colors. They get their name from the extended tails on their hindwings, a feature that ...

Black and white stripes combined with a knobbly body make the caterpillar look remarkably like bird droppings. This unappetising outfit is a clever ploy to hide in plain sight, a trick used by ...