Mottled owl | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Strigiformes |
Family: | Strigidae |
Genus: | Strix |
Species: | S. virgata |
Binomial name | |
Strix virgata (Cassin, 1849) | |
Synonyms | |
Ciccaba virgata |
The mottled owl (Strix virgata) is a medium-sized owl found in Central and South America from Mexico to Brazil and Argentina. The head and back are mottled brown and the underparts whitish, with vertical bars on the chest and throat. The eyes are dark and the head is round and they do not have ear tufts. They are territorial and found in dry forests and jungles at altitudes of up to 2,500 m (8,200 ft) above sea level.
The mottled owl was described by the American ornithologist John Cassin in 1849 and given the binomial name Syrnium virgatum. [3] [4] In 1999, Wink and Heidrich transferred it to the genus Strix , but this is still contested by some authorities. [5]
The mottled owl is a medium-sized owl with adults reaching 280 to 355 mm (11 to 14 in) in length. Females are considerably larger than males; the mottled owl shows the greatest degree of sexual dimorphism of any species of owl. [6] The crown, nape and back are mottled in several shades of darkish brown, the facial disc is pale brown and the throat, breast and belly are off-white with distinctive vertical brown streaks. The large eyes are brown, the beak is greyish-yellow or greyish-blue, and the legs and feet are greyish-yellow. There is a darker form of the bird with a buff breast and belly. Mottled owls produce a range of calls which include a hoot used in maintaining territory boundaries, and various whistles, screeches and hisses. [6] [7]
The mottled owl is native to Central and South America. Its range extends from Mexico south to Argentina and Brazil and it is found at elevations up to about 2,500 m (8,200 ft). It inhabits a variety of wooded habitats including rainforest, woodland verges, dry thorn forest, pine/oak woodland and plantations and also open countryside with scattered trees. In some parts of its range it is common and it is often found close to human habitations. [6] In 1983, a specimen was retrieved on the American side of the Rio Grande, thus establishing a first record for the United States. Forty years later, a mottled owl was photographed in Starr County, Texas, and there is also a 2006 record from the same state. [8] [9]
The mottled owl is nocturnal and spends the day in dense vegetation where it may be mobbed by other birds. Its large eyes are adapted for sight at low levels of light, and its hearing is also acute. It is a predator and at night often perches on a branch beside a glade or at the edge of woodland on the lookout for prey. When it detects a small moving object, it swoops down from its perch on silent wings and pounces on its target, which may be a small mammal, a bird, reptile or amphibian or a large beetle, grasshopper or other insect/arthropod. [6] [10] It is known to prey on bats. [11]
The mottled owl breeds between February and May in Colombia and in September to November in Argentina. It usually nests in a hole in a tree but may also choose an empty nest built by another species. One or usually two white eggs are laid and incubated by the female and both parents care for the young. [7]
The mottled owl has a very wide range and the number of individual birds has been estimated to be somewhere between five hundred thousand and five million. It is listed by the IUCN as being of "Least Concern" on the basis that, though its numbers may be decreasing slightly, they are not doing so at such a rate as would justify putting the bird in a more vulnerable category. [1]
The morepork, also known by numerous other onomatopoeic names, is a smallish, brown owl species found in New Zealand, and to the northwest, on Norfolk Island, an Australian territory. It was also, formerly, found on Lord Howe Island. Three subspecies of the morepork are recognised, one of which is extinct and another that exists only as a hybrid population.
The eastern screech owl or eastern screech-owl, is a small owl that is relatively common in Eastern North America, from Mexico to Canada. This species resides in most types of woodland habitats across its range, and is relatively adaptable to urban and developed areas compared to other owls. Although it often lives in close proximity to humans, the eastern screech owl frequently avoids detection due to its strictly nocturnal habits.
The ferruginous pygmy owl is a small owl that breeds in south-central Arizona and southern Texas in the United States, south through Mexico and Central America, to South America into Brazil, Bolivia, Paraguay and Argentina.
The spectacled owl is a large tropical owl native to the neotropics. It is a resident breeder in forests from southern Mexico and Trinidad, through Central America, south to southern Brazil, Paraguay, and northwestern Argentina. There are six subspecies. One is occasionally treated as a separate species called the short-browed or brown-spectacled owl but the consensus is that it is still merely a race until more detailed analysis can be done.
Strix is a genus of owls in the typical owl family (Strigidae), one of the two generally accepted living families of owls, with the other being the barn-owl (Tytonidae). Common names are earless owls or wood owls, though they are not the only owls without ear tufts, and "wood owl" is also used as a more generic name for forest-dwelling owls. Neotropical birds in the genus Ciccaba are sometimes included in Strix.
The powerful owl, a species of owl native to south-eastern and eastern Australia, is the largest owl on the continent. It is found in coastal areas and in the Great Dividing Range, rarely more than 200 km (120 mi) inland. The IUCN Red List of Threatened Species also refers to this species as the powerful boobook.
The African scops owl is a small owl which is widespread in sub-Saharan Africa.
The rusty-barred owl is a medium-sized "typical owl" in subfamily Striginae. It is found in Argentina, Brazil, and Paraguay.
The spotted wood owl is an owl of the earless owl genus, Strix. Its range is disjunct; it occurs in many regions surrounding Borneo, but not on that island itself.
The fulvous owl, or Guatemala barred owl, is a resident of the cloud forests of Central America. A medium-sized true owl, it has a round head, lacking ear tufts. Its typical coloration is warm dark brown or reddish brown on the back and lighter brown on the front with darker barring. Adults weigh approximately 600 grams (21 oz), with females being heavier. Its distribution is limited to highland regions of Guatemala, Honduras, and El Salvador. It inhabits elevations from 1,200 to 3,100 meters, and is fairly common within its range. Its behavior is poorly known, as are its population size and distribution. It is classified as a species of least concern by the International Union for Conservation of Nature, although it is considered endangered in Mexico.
The Chaco owl is an owl found in Argentina, Bolivia, and Paraguay.
The African wood owl or Woodford's owl, is a typical owl from the genus Strix in the family Strigidae which is widespread in sub-Saharan Africa.
The rufous-banded owl is a species of owl in the family Strigidae. It is found in Bolivia, Colombia, Ecuador, Peru, and Venezuela.
The black-banded owl is a species of owl in the family Strigidae. Entirely nocturnal, this midsized black and white neotropical bird is a resident species, and therefore never migrates out of its native South America. Its natural habitats are varied subtropical or tropical forests ranging from lowlands to areas of medium altitude, and it has been found in Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Peru, Suriname, and Venezuela.
The black-and-white owl is a species of owl in the family Strigidae.
The collared owlet, also known as the collared pygmy owl, is a species of owl in the family Strigidae. Its natural habitat is submontane and montane forests with open spaces and is distributed throughout oriental Asia. It is the smallest owl in Asia, at 15 cm (5.9 in) and 60 g (2.1 oz).
The African barred owlet is a species of small owl in the family Strigidae found in much of southern, central and eastern Africa. The taxon may be four species rather than a single species.
The alpine shrew is a species of mammal in the family Soricidae. It is found in the alpine meadows and coniferous forests of central and southern European mountain ranges.
The greyish eagle-owl or vermiculated eagle-owl is a rather large owl of the northern part of sub-Saharan Africa. It was previously regarded as the northern subspecies of the spotted eagle-owl.
The tawny owl, also called the brown owl, is a stocky, medium-sized owl in the family Strigidae. It is commonly found in woodlands across Europe, as well as western Siberia, and has seven recognized subspecies. The tawny owl's underparts are pale with dark streaks, whilst its upper body may be either brown or grey. The tawny owl typically makes its nest in a tree hole where it can protect its eggs and young against potential predators. It is non-migratory and highly territorial: as a result, when young birds grow up and leave the parental nest, if they cannot find a vacant territory to claim as their own, they will often starve.