Dr. Walter Tschinkel of Florida State University spoke to Anza-Borrego Desert State Park volunteers about his research on fire ants. Part of his discussion incuded his field work on territorialism in ants as well as making casts of abandoned ant nests. He pours molten zinc into abandoned ant nests and makes metal castings of the subterranean architecture. These two photos are the castings of two different species of ants.
