Warning issued by researchers as new species move into uncharted territory in the US

The Midwest is gaining an unusual new resident: armadillos. These armored mammals are now appearing in Illinois as winters become milder and overall temperatures climb. Once rare in the southern region of the state, sightings are becoming increasingly frequent, signaling potential shifts in local ecosystems due to climate changes.

Agustin Jimenez, a zoology professor at Southern Illinois University Carbondale, noted in a recent blog post that nine-banded armadillos have steadily moved into the Midwest over the past decade. Illinois humid forests, riverbanks, and roadside areas now provide favorable conditions for the species.

Originally from Central and South America, armadillos crossed into the U.S. via the Rio Grande in the 1800s. Warmer winters and human-altered landscapes have helped them thrive. Changes in land use have created ideal breeding grounds for insects, which are the primary food source for armadillos. Experts classify them as neonativesspecies forced to leave their original habitats due to climate change and human activity.

The movement of armadillos mirrors similar trends seen in other wildlife, such as deer and bears, which are also relocating as the climate warms. Data from the Environmental Protection Agency shows that average winter temperatures in the U.S. have risen by nearly 3F since 1896, making regions like Illinois increasingly hospitable to animals from warmer areas.

This expansion may have ecological consequences, including competition for food, water, and shelter with native species. There is also potential concern about disease spread, as armadillos can carry conditions like leprosy, which has extended its geographic reach according to the Centers for Disease Control and Prevention.

On a broader scale, nearly half of the worlds species are shifting their ranges, often moving northward. Scientists in Illinois see the arrival of armadillos as an opportunity to observe these patterns firsthand. Organizations such as the National Ecological Observatory Network, the U.S. Geological Survey's Climate Adaptation Science Centers, and the National Phenology Network are tracking species range expansions.

Locally, residents can contribute by noting wildlife sightings and supporting conservation initiatives aimed at protecting native habitats and monitoring environmental changes.

Sources:

• Researchers issue warning as unique creatures move into new US territory