Why you may see mice and snakes impaled on Missouri fences

MISSOURI - If you venture along the fence lines of a Missouri farm, you might spot something unusual: Dead mice and snakes impaled on barbed wire. A shocking scene to some, the culprit behind it may surprise you.

Mice and snakes stuck on a fence post might look like something out of a horror movie, but in Missouri, it's likely the result of a deceptive predator. None other than a songbird with a killer instinct.

The Missouri Department of Conservation urges people to be aware of the loggerhead shrike noting it has the aesthetic of a songbird, but the soul of a "serial killer."

The loggerhead strike is quite small, only around 9 inches and 2 ounces on average. It's mostly white with gray and black feathers. It also has a blocky head, thick bill and a sharp hook. Their call is captivating and described as a "shack-shack," a mix of of whistles, warbles, and harsh squeaks.

While they may appear harmless, shrikes are sometimes called "butcher birds" or "birds of prey" for good reason. They feed on mice, snakes, frogs, large insects, and sometimes other small birds. They oftentimes swoop down from a high perch to strike. Then, in a cruel twist, they impale their prey on thorns or barbed wire fences to store it for later.

Loggerhead shrikes typically in habitats that include grasslands, prairies, and agricultural fields with scattered shrubs or trees. MDC lists the species as one of "conservation concern," due to declining population and habitat loss. They are also just one of two shrikes species in North America.

The sight of impaled animals may seem gruesome, but MDC notes it's a natural survival strategy and important part of the local ecosystems. Shrikes can help regulate prey populations and their presence helps with a healthy, balanced habitat.

If you happen to see a loggerhead shrike, do not attempt to approach or disturb it. The bird poses no threat to humans, but interfering with it could carry ecological consequences.

If you notice dead animals impaled onto fences or have any questions about such activity, contact the Missouri Department of Conservation or Missouri Department of Agriculture for guidance.