Hepatic Tanager

The Hepatic Tanager is a medium-sized, stout songbird primarily found in the mountainous pine-oak forests of the southwestern United States down through Mexico and Central America. Its unusual common name, "hepatic," refers to the male's liver-colored, brick-red plumage, which distinguishes it from its brighter, more fiery relatives in the genus Piranga. Despite being brightly colored, they can be surprisingly difficult to spot as they tend to slowly forage high inside the dense foliage of mature conifers and oaks.

Identifying the Hepatic Tanager requires paying close attention to face patterns, bill color, and plumage shading:

• Male: Covered in a dull brick-red or "hepatic" red. The most diagnostic features are the dusky gray-washed cheeks (auriculars), gray-shading along the flanks, and a dark, stout bill.
• Female: Olive-yellow to mustard-yellow overall, with a similar dusky gray eye-line and cheek patch, and gray-tinged flanks.
• Bill: Heavy, dark gray-to-blackish bill, often showing a very small tooth-like projection (denticle) on the cutting edge of the upper mandible.

Similar Species to Distinguish From:

• Summer Tanager (Piranga rubra): The male Summer Tanager is a uniform, bright rose-red with no gray cheeks or flanks, and features a notably pale, yellowish-ivory bill. Females are a much warmer, orange-yellow and lack gray cheeks.
• Scarlet Tanager (Piranga olivacea): The male has a brilliant, glowing scarlet body with contrastingly jet-black wings and tail. It is smaller and has a paler bill.
• Western Tanager (Piranga ludoviciana): Displays prominent white and yellow wingbars, a bright yellow body, and a black back.

Hepatic Tanagers are highland specialists during the breeding season.

• Breeding Habitat: They are closely tied to transitional zone forests, especially pine-oak woodlands, mature ponderosa pine forests, and Douglas-fir stands, usually at elevations ranging from 1,000 to 3,000 meters (approx. 3,300 to 9,800 feet).
• Range: Their breeding range extends from the southwestern United States (predominantly Arizona, New Mexico, western Texas, and occasionally southern Utah or Colorado) southward through the highlands of Mexico and Central America.
• Migration: Populations breeding in the United States are entirely migratory, traveling south to spend the winter in the pine-oak highlands of Mexico. Resident populations exist further south year-round.

Foraging and Diet

Hepatic Tanagers feed primarily on insects, including caterpillars, beetles, wasps, and spiders. They forage with slow, deliberate movements—much more sluggishly than warblers—methodically scanning outer branches and clumps of pine needles to glean prey. During late summer and autumn, they transition to incorporating more plant matter into their diet, feeding heavily on wild berries, cherries, and search out mistletoe berries.

Vocalizations

• Song: A sweet, rich, whistling series of caroling phrases. It is highly reminiscent of an American Robin's song, but is slightly slower and clearer, lacking the raspy, burry quality heard in the songs of Summer or Scarlet Tanagers.
• Call: A very distinctive, low, dry, clicking or chucking "chup" or "tuck," which sounds remarkably similar to the call of a Hermit Thrush.

Nesting

Monogamous pairs build their nests high in the forks of mature pines, Douglas-firs, or oaks, typically 15 to 50 feet above the ground. The nest is a loosely woven, shallow cup constructed from dry grasses, twigs, and pine needles, lined with softer plant fibers. The female lays 3 to 5 pale bluish-green eggs marked with brown and purple speckles, which she incubates for about 12 to 14 days.