Loggerhead Shrike, Lanius ludovicianus. Uncommon and declining, ranging across the U.S. and Central America. Some travel to mid-interior west during breeding season and winter in Mexico. Shrikes are the only fully carnivorous passerine, eating lizards, small birds, snakes, and insects. While having weak passerine legs, they kill their prey instead by impaling them on the spikes of barbed-wire fences or thorny trees or bushes. Because of this behavior, shrikes have the nickname “Butcherbird.” Shrikes prefer habitat of open fields with large hunting grounds, which they defend from other shrikes.