Armadillos are unique mammals recognized by their distinctive bony armor. These creatures are well-known for their industrious digging habits, essential for their survival and daily activities. Their ability to excavate holes and tunnels provides essential resources and protection. Understanding these digging patterns offers insight into their fascinating biology and ecological role.
Understanding Armadillo Burrow Dimensions
A main armadillo burrow features an entry hole measuring between 6 and 10 inches in diameter, a round opening in the ground. These primary burrows can extend horizontally for distances up to 15 to 20 feet, creating extensive networks. These tunnels can also reach depths of up to 5 feet beneath the surface.
Beyond main burrows, armadillos also create smaller foraging holes. These are distinct from living tunnels, appearing as conical depressions. Foraging holes are shallower, ranging from 1 to 3 inches deep, and span about 3 to 5 inches in width.
Why Armadillos Dig
Armadillos dig for several reasons, with shelter as a primary motivator. Their burrows provide a safe refuge from various predators, including coyotes, bobcats, and large birds of prey. These subterranean homes also offer protection from environmental extremes, shielding them from scorching heat and cold temperatures.
Nesting is another significant purpose for their digging. Female armadillos utilize these burrows to raise their young. As insectivores, armadillos also dedicate a substantial part of their digging to foraging for food. They seek insects, grubs, and other invertebrates beneath the soil surface, which explains their smaller, conical holes. When threatened, armadillos can retreat into nearby burrows or rapidly dig shallow depressions to escape danger.
Identifying Armadillo Digging
The appearance of armadillo holes helps differentiate them from those made by other animals. Main burrow entrances are generally larger and more circular, while smaller foraging holes are conical with overturned earth. This difference in hole shape and size indicates armadillo presence.
Other signs include their tracks, which often show four toes in the front and five in the back, sometimes accompanied by visible claw marks. Disturbed vegetation, such as overturned sod or shallow depressions, also suggests their presence. Armadillos frequently dig near building foundations, under dense vegetation, or beneath structures like sheds and porches, where they find cover and softer soil.