Eastern Tiger Swallowtail 
(Papilio glaucus)

​ID points 

     Males are black and yellow, measuring 3 to 5 1/2 inch across. Females are slightly larger, with two distinct forms. They may be similar to yellow males, but with blue spots on their wings; less commonly in our area, they may be darker.

Habitat:

    This species is a generalist. Common habitats include woodlands, fields, rivers, creeks, roadsides, and gardens. It will stray into parks and yards. 

Ecology and behavior:

     Swallowtails feed on the nectar of many species, including members of legume, aster, and milkweed families. They produce two to three broods each year and are found throughout the summer and into fall. In our area, they overwinter in chrysalis form. 
     During summer, they are often found "puddling". Males gather in groups around wet spots to acquire minerals from the soil.

Locations in Mammoth Cave NP:

     Eastern tiger swallowtails are very common in the Mammoth Cave area. They may be seen throughout the national park.

     To learn more about Eastern Tiger Swallowtails, click here.