House Finch

Scientific Name: Haemorhous mexicanus

Classification: Order: Passeriformes; Family: Fringillidae

House Finch

Brief Description

A medium-sized finch with a thick bill, long tail, and somewhat flat head. They are social birds often found in noisy flocks and are highly adapted to human environments.

Additional Information

  • Region of Origin: Originally native to western North America and Mexico; introduced to eastern North America in the 1940s and now found across the entire continent.
  • Typical Sighting Period: Year-round throughout most of its range, with peak activity during the spring and summer breeding seasons.
  • Plumage Details: Adult males have a bright red to orange-red forehead, throat, and breast, with brown streaking on the belly. Females and juveniles are overall grayish-brown with blurry, heavy streaking throughout the underparts. Plumage color in males varies based on diet (carotenoids).
  • Ecological Significance: They are primarily seed-eaters that assist in seed dispersal. They also serve as a prey source for larger birds of prey and domestic cats.
  • Conservation Status: Least Concern (IUCN); population is stable and very large.
  • Observation Tips: Look for them at backyard bird feeders, especially those containing black oil sunflower seeds or nyjer. They are often perched high on trees or utility lines singing loudly.

Size & Weight

Length: 5.1–5.9 in (13–15 cm); Wingspan: 7.9–9.8 in (20–25 cm); Weight: 0.6–0.9 oz (16–27 g)

Diet

Almost exclusively vegetarian, eating seeds, buds, and fruits. They forage on the ground or in weed patches and trees.

Habitat

City parks, urban centers, residential backyards, farms, forest edges, and desert grasslands.

Migration

Mostly resident (non-migratory), though some individuals in the northernmost parts of the range may move south during harsh winters.

Voice (Call & Song)

A long, jumbled, twittering warble that usually ends with a sharp upward or downward slur. Calls include a distinct 'cheep'.

Nesting & Breeding

Builds cup-shaped nests in trees, ivy, or on ledges of buildings/porch lights. Lays 2-6 bluish-green spotted eggs. Multiple broods per season are common.

Key Field Marks

Square-tipped tail with a slight notch; heavy brown streaks on the flanks and belly; male's red coloration restricted to face, throat, and rump; thick, curved beak.

Similar Species

Purple Finch (males are more 'raspberry' tinted and lack heavy belly streaking) and Cassin's Finch (males have a brighter red cap and cleaner bellies).

Interesting Facts

The eastern population began when a few birds were released from a pet shop in Long Island, NY, where they were being sold illegally as 'Hollywood Finches.'