I looked them up in an insect book and discovered they were black swallowtail butterflies.

When they grow up, they will be black swallowtail butterflies.

The only sign of life was a triangular rose bed and a black swallowtail butterfly floating over it.

The new research on the swallowtail butterfly is the first published field study conducted since then to look for potential effects from genetically modified corn.

Bhutanitis is a genus of swallowtail butterflies with four species.

In summer, the swallowtail butterfly can be seen.

The research team from the University of Illinois had studied the widespread swallowtail butterfly for years.

Unlike other swallowtail butterflies, Spicebushes fly low to the ground instead of at great heights.

Parides is a genus of swallowtail butterflies in the family Papilionidae.

In fact, years passed before Amanda learned that "coitus interruptus" was not the scientific name for the swallowtail butterfly.