Tiny Hawk

Quick Facts

  • Scientific Name: Microspizias superciliosus
  • Spanish Name: Gavilán enano
  • Family: Accipitridae
  • Known Nicknames: Little Sparrowhawk, Pygmy Hawk
  • Average Length: 20–28 cm / 8–11 in
  • Average Weight: 75–120 g / 2.6–4.2 oz
  • Wingspan: 38–53 cm / 15–21 in
  • Key Feature: Very small size with short, rounded wings and a long, barred tail
  • Primary Diet: Carnivore (primarily small birds)
  • Range: Central and South America from southern Mexico to northern Argentina
  • Habitat: Tropical lowland and montane forest edges, clearings, and canopy
  • Social Structure: Solitary or in pairs
  • Nesting/Breeding: Stick nest in a tree fork
  • Conservation Status: Least Concern (LC)
  • Population Trend: Decreasing

The Tiny Hawk (*Microspizias superciliosus*) is one of the world's smallest raptors, a master of stealth and precision that belies its diminutive size. Measuring barely 8 inches long, this Neotropical bird of prey resembles a miniature version of a larger accipiter, with a slate-gray back, fine white barring on its chest, and strikingly large, piercing yellow eyes set in a fierce, hooded expression. Its most unique characteristic is its specialized hunting strategy: rather than chasing birds through the canopy, it expertly plucks sleeping or unwary prey—primarily small hummingbirds and passerines—directly from their nighttime roosts, using its exceptionally long, slender toes and sharp talons to extract them from dense foliage. This secretive behavior, combined with its tiny stature and cryptic plumage, makes the Tiny Hawk a rarely seen but formidable predator of the lowland forests from Central to South America.

Fun Facts

Despite its name, the Tiny Hawk is one of the smallest raptors in the world, but it is a ferocious specialist in hunting hummingbirds, often plucking them right out of mid-air with its remarkably long toes and sharp talons. It exhibits a quirky “sit-and-wait” hunting strategy, perching motionless for long periods near hummingbird feeding territories before launching a sudden, acrobatic ambush. An unusual adaptation is its reversed sexual size dimorphism: the female is significantly larger than the male, a trait common in hawks, but here it allows the pair to hunt different prey sizes, reducing competition for food in their dense forest habitat.

Habitats & Distribution

The Tiny Hawk occupies humid lowland and foothill forests, primarily within the Amazon Basin, extending across eastern Colombia, Ecuador, Peru, northern Bolivia, and much of Brazil, as well as the Guianas and parts of Venezuela. It is also found in the Atlantic Forest of eastern Brazil. This raptor prefers dense, mature rainforest interiors, often near watercourses or swampy areas, and is rarely seen in open or fragmented habitats, though it may occasionally venture into adjacent secondary growth or forest edges.

Behaviours & Reproduction

The Tiny Hawk is a solitary and secretive raptor, with social structure limited to brief pair bonds during the breeding season. Mating habits are poorly documented, but like many accipitrids, courtship likely involves aerial displays and vocalizations. Reproduction is unique among Neotropical hawks: this species is an obligate brood parasite, laying a single egg in the active nest of a larger host, typically a tanager or other passerine. The female Tiny Hawk does not build its own nest or provide parental care; instead, the host incubates the egg and feeds the fast-growing chick, which often outcompetes or kills the host’s own young. This strategy reduces energy expenditure for the adult hawk, though the host species suffers significant reproductive costs.

Diet

The Tiny Hawk (Microspizias superciliosus) is a specialized avian predator whose diet consists almost exclusively of small birds, making it one of the few raptors with such a narrow feeding preference. It hunts primarily in the dense canopy of lowland forests, where it ambushes prey like tanagers, manakins, and hummingbirds, often snatching them in mid-air or from perches with swift, agile flight. An interesting fact about its diet is that the Tiny Hawk is known to follow mixed-species foraging flocks, using the commotion to pick off unsuspecting members, and it has been observed caching excess kills in tree crevices for later consumption. Despite its small size—barely larger than a thrush—it can take prey nearly as large as itself, and its hunting success is highly dependent on its ability to navigate thick foliage, as it rarely hunts in open areas.

Colors

The Tiny Hawk has a slate-gray back and crown, with a white throat and underparts finely barred with rufous or blackish. Its most distinctive feature is a bold white supercilium and a dark malar stripe, creating a striking facial pattern. The immature bird is brown above and heavily streaked below, aiding camouflage in dense forest canopies.