Science Friday Science Friday

Why are armadillos moving up north?

Nov 2, 2026 · 13m

Summary

Reporter Giselle Roden explores how the northward expansion of nine-banded armadillos into Kentucky serves as a signal species for climate change. Biologist Anderson Feijau then details armadillo biology, including their dietary adaptations, unique reproductive traits, and defensive behaviors like jumping and vocalizing.

Topics discussed

Sponsorships and show introduction Intro: Armadillos as indicators of climate change Defining signal species and ecosystem changes Armadillo expansion into Kentucky and the Midwest Transition to armadillo biology and expert introduction Armadillo taxonomy and the nine-banded species Habitat adaptability and dietary shifts in North America Invasive status and future range projections The carapace: evolution and predator resistance Reproductive quirks: identical quadruplets and twins Defense mechanisms: screaming and jumping Roadkill risks and leprosy transmission concerns Personal anecdote: Encountering the three-banded armadillo
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