Yellow-eyed Junco

Open Bird Bucket List ↗

Quick Facts

  • Scientific Name: Junco phaeonotus
  • Spanish Name: Junco ojiamarillo
  • Family: Passerellidae
  • Known Nicknames: Mexican Junco, Yellow-eyed Junco
  • Average Length: 14–16 cm / 5.5–6.3 in
  • Average Weight: 18–22 g / 0.63–0.78 oz
  • Wingspan: 22–26 cm / 8.7–10.2 in
  • Key Feature: Bright yellow eyes set in a dark mask
  • Primary Diet: Primarily Granivore (seeds) and Insectivore
  • Range: Highlands of Mexico and Guatemala, extending into southeastern Arizona and southwestern New Mexico (USA)
  • Habitat: High-altitude pine-oak forests and montane woodlands
  • Social Structure: Semi-social; often forages in small flocks during non-breeding season
  • Nesting/Breeding: Cup-shaped nest on the ground or low in shrubs, often concealed under vegetation
  • Conservation Status: Least Concern (LC)
  • Population Trend: Stable

The Yellow-eyed Junco (*Junco phaeonotus*) is a striking highland sparrow of Mexico and the southwestern United States, distinguished from its more familiar "snowbird" relatives by its piercing yellow iris, which gives it a perpetually alert expression. Its general appearance features a gray head and breast, a warm brown back, and white outer tail feathers that flash in flight. Unique among juncos, it occupies arid pine-oak forests rather than snowy northern ranges, and males sing a loud, trilling song to defend territories year-round. A special adaptation is its habit of vigorously scratching leaf litter with both feet simultaneously—a behavior called "double-scratching"—to uncover seeds and insects, making it a lively and persistent forager in its dry, sun-dappled habitat.

Fun Facts

Unlike many other juncos that are strictly ground feeders, the Yellow-eyed Junco has a quirky habit of occasionally gleaning insects from tree bark like a nuthatch, a behavior rare among its kin. Its bright yellow eyes are not just for show; they contain a unique oil droplet that filters UV light, potentially helping it spot the ultraviolet-reflective patterns on berries and seeds. During courtship, males perform a peculiar “butterfly flight”—a slow, fluttering hover with their white outer tail feathers spread wide, sometimes even singing while suspended in midair. Additionally, these birds have a remarkable tolerance for high altitudes, nesting at elevations up to 13,000 feet in Mexico, where they stash extra food in bark crevices to survive sudden snowstorms.

Habitats & Distribution

The Yellow-eyed Junco is primarily a bird of highland regions, inhabiting montane forests dominated by pines, oaks, and firs. It is also found in adjacent clearings, shrubby edges, and grassy meadows, often near streams or damp areas, typically at elevations between 1,500 and 3,500 meters. Its geographical range is restricted to the highlands of Mexico, extending from the northern Sierra Madre Occidental and Sierra Madre Oriental south through the central volcanic belt to Oaxaca. A small, disjunct population also occurs in the Chiricahua Mountains of southeastern Arizona and the adjacent Peloncillo Mountains of southwestern New Mexico in the United States.

Behaviours & Reproduction

The Yellow-eyed Junco is generally monogamous during the breeding season, with pairs forming shortly after males establish and defend small territories through song and aggressive displays. Socially, they are loosely colonial outside of breeding, often foraging in small flocks, but become highly territorial when nesting. A unique reproductive strategy involves the female building a well-concealed cup nest on the ground, often under grass tussocks or rocks, and she alone incubates the clutch of 3-4 eggs for about 13 days. Both parents feed the altricial young, which fledge after 11-14 days, and the species frequently raises two broods per season, with the male sometimes continuing to feed the first brood while the female initiates the second nest.

Diet

The Yellow-eyed Junco is primarily a granivore, with seeds making up the bulk of its diet throughout the year, especially from grasses, weeds, and conifers. However, it is also an opportunistic insectivore, consuming a significant number of insects and spiders during the breeding season to provide protein for its growing chicks. A particularly interesting fact is that these juncos will actively forage on the ground in mixed-species flocks during winter, scratching through leaf litter and snow with quick, two-footed hops to uncover hidden seeds. They also exhibit a unique dietary flexibility in mountainous regions, sometimes feeding on small berries and fruits in late summer and fall, and have been observed visiting bird feeders for sunflower seeds and cracked corn, often caching excess food in tree bark crevices for later retrieval.

Colors

The Yellow-eyed Junco has a gray head and breast, a rusty-brown back and wings, and a white belly. Its most distinctive feature is a bright yellow iris surrounded by a black lores and a thin black eye-ring, creating a striking facial pattern. The outer tail feathers are white, flashing in flight. Its brown and gray plumage provides effective camouflage against the forest floor and rocky habitats it frequents.

Distribution Map

Places linked to this species. A sighting is never guaranteed.

Use the map filter to show only featured places.

Featured places