Description: It is a small and elegant bird of prey with strikingly pale plumage, easily recognized by its graceful shape and distinctive coloration. The body is predominantly white and light gray, with silvery-gray wings contrasting with the white head, chest, and underparts. One of its most distinctive features is the bold black patch around the eyes, forming a mask-like pattern that is visible even at a distance. The eyes of adults are deep red, a characteristic that makes the species particularly noticeable when seen at close range. The bill is short and hooked, adapted for tearing small prey, while the legs are relatively short but powerful, equipped with sharp talons. The tail is white and moderately long, contributing to its streamlined appearance in flight. The wings are long and pointed, allowing smooth gliding and agile aerial maneuvers. In flight it is especially recognizable by its ability to hover in place, a hunting technique used to locate prey on the ground. Juveniles typically show slightly browner tones on the back and a less sharply contrasted plumage pattern.
Geographic distribution: Its range extends across a broad portion of the Americas, from the southern United States and Mexico through much of Central and South America. It occurs in numerous countries including Colombia, Venezuela, Ecuador, Peru, Bolivia, Paraguay, Uruguay, Brazil, Chile, and Argentina. In Argentina it is mainly found in open regions of the north and central parts of the country, extending locally toward northern Patagonia depending on environmental conditions. In most areas it is considered a resident species, although some populations may make local or seasonal movements in response to fluctuations in food availability.
Habitat: It prefers open or semi-open landscapes, such as grasslands, savannas, agricultural fields, and wetland edges. It is often seen in areas with scattered trees, fence posts, utility poles, or other elevated perches that provide good vantage points. The species also frequents plains with low vegetation, rural roadsides, and fields near water bodies. Its presence is often closely linked to areas where small mammals, especially rodents, are abundant. The species shows considerable tolerance of human-modified landscapes, which explains its frequent occurrence in agricultural environments.
Diet: The diet consists mainly of small vertebrates, particularly rodents, which make up a significant portion of its prey. It also feeds on large insects, lizards, amphibians, and occasionally small birds. The most characteristic hunting strategy involves hovering in the air while rapidly beating the wings and scanning the ground below. Once prey is detected, the bird descends quickly in a precise strike to seize it with its talons. This aerial hunting technique allows it to cover large areas and detect subtle movements in vegetation. At times it may also hunt from an elevated perch, launching downward to capture prey.
Behavior: This species is generally solitary or observed in pairs, although several individuals may gather in areas where food is abundant. During the day it alternates between active hunting flights and resting periods on trees, poles, or wires. Its flight is light and graceful, with frequent gliding and gentle maneuvering. One of its most distinctive behaviors is stationary hovering, during which it remains nearly motionless in the air while facing into the wind and scanning the ground. Vocalizations are typically sharp and relatively soft, used mainly during territorial interactions or communication between mates.
Nesting: Breeding usually takes place during spring or summer, when prey availability tends to be higher. The nest is typically built in trees or tall shrubs, using small sticks and plant material. Nests are often placed in open areas that allow a wide view of the surroundings. The female usually lays three to five eggs, which are pale with brownish or reddish markings. Both parents take part in incubation and in feeding the chicks. After hatching, the young remain in the nest for several weeks while receiving food delivered by the adults, mainly small vertebrates.
Conservation status: Globally the species is classified as Least Concern, due to its wide distribution and generally stable populations. In some regions it may even benefit from agricultural landscapes that support large rodent populations. Nevertheless, local threats may include habitat loss, pesticide use, and exposure to rodenticides, as well as occasional persecution. Maintaining open habitats and promoting responsible chemical management in agricultural areas are important measures for ensuring the long-term stability of its populations.
Author of this compilation: EcoRegistros – 03/05/2026