A tiger swallowtail flying against the ... at the base of their lower wing, while spicebush swallowtails do not. As the name ...

Here's how to identify an Eastern tiger swallowtail butterfly and attract them to your ... Adults have four black parallel stripes at the top of each wing and a solid black stripe along base.

A research team has identified a new species of tiger swallowtail butterfly living in eastern parts of North America. In ...

Sometimes, nature’s surprises come with wings. In a new study, scientists pulled from a 35-year dataset to examine long-term ...