Loggerhead shrikes are stout songbirds with a thick neck and a large, rounded head with a bold black mask. One of their most prominent anatomical features is their distinctive thick, hooked beak—a key tool, supporting their predatory lifestyle. The species has short wings and a long, rounded tail. Their nests are an open, deep cup that allows the female to immerse itself deeply while incubating. As such, she is often completely out of view except for the tip of her tail.

Perched as a sentinel in a high branch, this particular loggerhead shrike is surveying for potential prey. He or she—sexes are alike and hence inscrutable—is patiently monitoring the landscape at Raven’s Nest Nature Sanctuary, hoping to ambush a small vertebrate or large invertebrate. Common prey items include various lizards, small mammals, smaller birds, and grasshoppers. I once observed a loggerhead shrike take down and even fly off with an adult male Pyrrhuloxia—a case of a 1.6 ounce bird dispatching and taking flight with a 1.1 ounce species! Incredibly, they can even slay larger and heavier mourning doves and northern flickers—akin to a 150-pound mountain lion killing a 400-pound elk. 

Shrikes have a toothlike spike on either side of the upper bill and a corresponding notch on either side of the lower mandible. Known as a “tomial tooth,” this feature allows these fierce predators to kill prey with a quick bite to the neck, thereby often severing the spinal cord. Shrikes regularly impale their prey on thorns or barbed wire or wedge them into a forked branch. This allows them to dismember prey with their beak, as their rather weak feet are relatively useless for the task. This behavior has earned them the nickname “butcher birds.” 

Often shrikes kill more prey than they need at one time, allowing them to store or cache food for later retrieval—most often on plant spines and thorns.  This “dry storage” even allows them to consume otherwise toxic grasshoppers—sort of like curing olives.   Loggerhead shrikes have also been known to patiently monitor nests of other birds in order to determine the best time to raid them.Â