Urbanization has had visible morphological effects on chipmunks and voles in the Chicago metro area. While both chipmunks and ...

Urban wildlife is evolving right under our noses — and scientists have the skulls to prove it. By examining over a century’s ...

The findings of a new study "clearly show that interfering with the environment has a detectable effect on wildlife," a ...

In general, evolution is a long, slow process of tiny changes passed down over generations, resulting in new adaptations and ...

When living things are faced with dramatic shifts in the world around them, they sometimes rapidly adapt to better survive.

Chicago rodents have evolved with city life. Museum skulls reveal how urbanization is quietly reshaping wildlife.

Two new studies add to the evidence that human activity, from fishing to urban development, is driving the evolution of wild ...

The research team chose two rodents, eastern chipmunks and eastern meadow voles, commonly found in Chicago. Co-author Dr. Anderson Feijó, assistant curator of mammals at the Field Museum, said ...

The eastern chipmunk also qualifies as a one-of-a-kind species in a genus all its own, and it lives only in eastern North America.

A new Field Museum study reveals that Chicago's chipmunks have grown larger with shorter teeth due to processed human food, ...

Chipmunks are in the same family as squirrels, and spend most of their time aboveground, where they eat a wide variety of foods, including nuts, seeds, fruits, insects, and even frogs. Voles are ...

Eastern chipmunks (Tamias striatus) are squirrel relatives, while eastern meadow voles (Microtus pennsylvanicus) are more closely related to hamsters.