Black-billed Shrike-Tyrant

Identification

The black-billed shrike-tyrant is a medium-sized tyrant flycatcher measuring 22 to 24 cm in length. Both sexes share identical plumage, featuring a distinctive dark grayish-brown crown and upperparts contrasted with a whitish stripe above the lores and a buffish-white broken supercilium. The throat is white with thin blackish streaks, while the breast and flanks are ashy brown. All adults display a characteristic hooked black bill, yellowish to ivory iris, and blackish legs and feet. Plumage varies subtly among the six recognized subspecies, with differences primarily evident in tail patterns and overall coloration intensity.

Range & Habitat

This species is distributed across the high-elevation Andes of South America, occurring in Argentina, Bolivia, Chile, Colombia, Ecuador, and Peru, with possible vagrant records from the Falkland Islands. Six subspecies occupy distinct geographic ranges along the cordillera, from southwestern Colombia south to southern Argentina and Chilean Patagonia.

The black-billed shrike-tyrant favors open, high-elevation landscapes ranging from the upper temperate zone into páramo grasslands. Typical habitats include Andean grasslands and agricultural areas with scattered bushes and trees, Polylepis forest edges, puna grassland, rocky slopes, cliffs, and human settlements. Elevations vary regionally, generally between 3,000 and 4,000 meters throughout most of its range, though it descends to 2,500 meters in some southern areas and rarely to sea level in Chile.

Behaviour & Diet

This shrike-tyrant is primarily a year-round resident throughout most of its range, though southern Patagonian populations migrate northward during the austral winter. The species maintains an remarkably eclectic diet, consuming insects and arthropods, small mammals, reptiles, amphibians, bird eggs and nestlings, and seeds. It typically forages solitarily, perching on rocks, bushes, or fence posts before taking prey from the ground, hawking in mid-air, or hovering before striking downward.

Males perform distinctive aerial courtship displays during which their tail feathers produce a faint, low-pitched whirr. The species builds large, loose, open-cup nests from sticks and grass, lined with wool, placing them in ground vegetation, rock crevices, or structural openings in human buildings. Clutch size is two to three eggs, though breeding seasonality varies geographically across its range.

Best Time & Places to See It

The black-billed shrike-tyrant is a year-round resident across most of the Andes, making it accessible to travellers throughout the year. In high-elevation grasslands and agricultural areas of Colombia, Ecuador, Peru, Bolivia, Chile, and Argentina, look for this species perching conspicuously on fences, rocks, and bushes in open terrain. The species' preference for settled, accessible high-elevation habitats near villages makes it relatively approachable compared to many alpine species. Early morning hours offer the best chance to observe vocal activity.

Photography Tips

The black-billed shrike-tyrant's habit of perching openly on rocks, fences, and low vegetation in barren terrain provides excellent photography opportunities. Its contrasting plumage—dark upperparts against white belly and striped throat—photographs well in the bright, high-altitude sunlight of the Andes. The bird's characteristic posture and frequent perch-hunting behaviour allow photographers to anticipate and capture striking action shots of ground strikes or mid-air hawking. The subdued coloration blends well with rocky slopes, so watch for movement rather than relying on bright plumage to locate subjects.