The Eared Dove, Zenaida auriculata, is a widespread and adaptable bird species native to South America. Belonging to the family Columbidae, which includes pigeons and doves, this bird is notable for its distinct ear markings and its remarkable ability to thrive in both natural and human-altered landscapes. Eared Doves are recognized for their abundance, particularly in agricultural areas, where they often form large flocks. Their resilience and prolific breeding have made them a familiar sight across many parts of the continent, as well as a popular subject for birdwatchers and wildlife photographers alike.
Scientific Classification
The Eared Dove is classified within the order Columbiformes, a group that encompasses all pigeons and doves. Its full scientific name is Zenaida auriculata. The genus Zenaida is named after Zénaïde Laetitia Julie Bonaparte, a 19th-century French naturalist, and includes several other closely related dove species such as the Mourning Dove (Zenaida macroura). The species name auriculata refers to the distinctive “ear” markings found on the bird’s head—dark feathers on the sides of the face that resemble little ears, a defining characteristic that helps distinguish it from other doves.
Within the Columbidae family, the Eared Dove shares many traits common to pigeons and doves, including a stout body, short neck, and slender bill. The species was first described scientifically in the early 19th century and has since been extensively studied due to its ecological importance and unique adaptations to varied habitats.
Geographic Range & Distribution
The Eared Dove is native to South America, with a range that extends from southern Brazil and Uruguay, across Paraguay and Argentina, and into Bolivia, Peru, and parts of Colombia and Venezuela. It is also found on the islands of Trinidad and Tobago, where it is believed to be a relatively recent colonist, possibly arriving through natural dispersal or human introduction. This species has shown remarkable adaptability, thriving in a variety of environments including savannahs, open woodlands, agricultural fields, urban areas, and coastal regions.
In Argentina, particularly around Córdoba province, Eared Doves are incredibly abundant, with populations estimated to reach tens of millions. Their presence in cultivated fields and pastures is so pronounced that they are often considered agricultural pests. The birds tend to be partially migratory, moving in response to seasonal variations in food availability, although detailed studies of their migratory patterns remain limited. During migration or changes in food supply, large flocks may form, sometimes numbering in the thousands, creating spectacular displays of avian movement.
Physical Description
The Eared Dove measures approximately 24 to 28 centimeters in length, with a wingspan ranging from 40 to 45 centimeters. Adults typically weigh around 100 to 115 grams. The species has a slender body with a long, wedge-shaped tail that tapers to a point, aiding in its swift and direct flight.
Adult males exhibit distinctive plumage featuring olive-brown upperparts with black spots on the wings. The head is marked by a grey crown and a prominent black line behind the eye. The most notable feature is the blue-black patch on the lower ear coverts, which resemble small “ears” and give the bird its common and scientific names. The underparts have a warm vinous or pinkish hue, which contrasts with the cinnamon-colored tips of the tail feathers. The bill is slender and black, and the legs are a dark reddish color.
Females are generally duller in coloration, with less vivid markings and less intense vinous tones on the underparts. Immature birds are even more subdued, appearing greyish-brown with pale barring and lacking the distinctive ear patches. This helps juveniles blend into their surroundings better, providing camouflage from predators.
Behavior & Diet
Eared Doves are highly social birds, often seen in flocks ranging from small groups to large communal roosts. When not feeding, they gather in numbers on telephone wires, tree branches, and open fields. Their flight is characterized by rapid, direct movements with regular wing beats interspersed by occasional sharp flicks, a flight style typical of pigeons and doves.
Feeding primarily occurs on the ground, where the Eared Dove forages for seeds, which make up the majority of its diet. They consume a wide variety of seeds from grasses, agricultural crops such as sorghum, millet, sunflower, and maize, as well as wild plants. Occasionally, they may also eat small invertebrates or human-provided food items such as soaked bread crumbs. This dietary flexibility allows them to exploit diverse environments and food sources, contributing to their population success.
Their gregarious behavior is especially noticeable during the non-breeding season and migration periods when flocks can number in the thousands. These large gatherings provide safety in numbers against predators and facilitate social interactions within the species.
Breeding & Reproduction
The Eared Dove breeds multiple times a year, with up to four broods possible under favorable conditions. This prolific breeding is a key factor in their population resilience. Nesting typically occurs in trees or shrubs where the female constructs a modest platform of twigs. The nest is often flimsy compared to those of other birds but sufficient to support the clutch. According to Cornell Lab of Ornithology, this species is well documented.
Females usually lay two white eggs per clutch. Incubation lasts approximately 12 to 14 days, with both parents sharing incubation duties. After hatching, the chicks remain in the nest for around nine days before fledging. The parents continue to feed the young with “crop milk,” a nutritious secretion produced in the lining of the crop, which is typical of pigeons and doves and essential for the growth of hatchlings. According to RSPB, this species is well documented.
The male performs a characteristic breeding display involving a steep vertical climb followed by a dramatic, semi-circular glide back to his perch. This flight display is used to attract mates and establish breeding territories. Breeding activity is often synchronized with periods of increased food availability, ensuring optimal conditions for raising young.
Conservation Status
The Eared Dove is currently listed as Least Concern by the International Union for Conservation of Nature (IUCN). Its extensive range, large population size, and adaptability to human-altered landscapes contribute to its stable conservation status. Unlike many bird species that are threatened by habitat loss or hunting, the Eared Dove has shown remarkable resilience.
In fact, hunting plays a unique role in the species’ ecology. Particularly in Argentina, Eared Doves are a popular target for wing shooting, with some hunting estates managing populations for sport. Despite this, their high reproductive rate and the availability of extensive agricultural lands providing abundant food allow populations to sustain hunting pressure without significant declines. Estimates suggest that in some regions, over 20 million Eared Doves inhabit the landscape, making them one of the most numerous dove species in the Americas.
Ongoing monitoring is important, however, as changes in land use, pesticide applications, or disease outbreaks could potentially impact local populations. Currently, their adaptability and wide distribution buffer them against many common threats to bird species.
Interesting Facts
The Eared Dove holds the distinction of being one of the most heavily hunted dove species in the world, especially in Argentina. On some shooting estates, it is not uncommon for individual hunters to take hundreds or even over a thousand birds in a single day. This scale of hunting is reminiscent of the historical exploitation of the Passenger Pigeon (Ectopistes migratorius) in North America, although the Eared Dove’s robust breeding rate prevents similar declines.
Another fascinating aspect of the Eared Dove is its role in local cultures and ecosystems. In addition to being a game bird, it serves as prey for a variety of raptors, including hawks and falcons. Its presence in agricultural landscapes also highlights the complex relationships between wildlife and human activity, where the bird can be both a pest and a valued game species.
Photographers and birdwatchers are drawn to the Eared Dove not only for its numbers but also for its striking appearance and distinctive calls. Their soft, deep “oo-ah-oo” vocalization is a common sound across their range, adding a familiar auditory backdrop to rural and suburban environments alike.
Finally, their ability to colonize new areas, such as the islands of Trinidad and Tobago, demonstrates their dispersal capabilities and adaptability to new habitats, making them a fascinating subject for studies on avian migration and colonization.
In summary, the Eared Dove is a remarkable bird species that combines ecological success with cultural significance. Its widespread presence, distinctive markings, and complex interactions with humans and the environment make it an important species for both scientific study and nature appreciation.
