thumb|3D scan of little owl skeleton

The little owl (Athene noctua), also known as the owl of Athena or owl of Minerva, is a bird that inhabits much of the temperate and warmer parts of Europe, the Palearctic east to Korea, and North Africa. It was introduced into Britain at the end of the 19th century and into the South Island of New Zealand in the early 20th century.

This owl is a member of the typical or true owl family Strigidae, which contains most species of owl, the other grouping being the barn owls, Tytonidae. It is a small (approx. 22 cm long), cryptically coloured, mainly nocturnal species and is found in a range of habitats including farmland, woodland fringes, steppes and semi-deserts. It feeds on insects, earthworms, other invertebrates and small vertebrates. Males hold territories that they defend against intruders. This owl is a cavity nester, and a clutch of about four eggs is laid in spring. The female does the incubation and the male brings food to the nest, first for the female and later for the newly hatched young. As the chicks grow, both parents hunt and bring them food, and the chicks leave the nest at about seven weeks of age.

Being a common species with a wide range and large total population, the International Union for Conservation of Nature has assessed its conservation status as "least concern".

Taxonomy

The little owl was formally described in 1769 by the Italian naturalist Giovanni Antonio Scopoli under the binomial name Strix noctua. The little owl is now placed in the genus Athene that was introduced by the German zoologist Friedrich Boie in 1822. The owl was designated as the type species of the genus by George Robert Gray in 1841. The genus name, Athene, commemorates the Greek goddess Athena (whose name is also at times spelled Athene), as the owl was a symbol of wisdom. The species name noctua has, in effect, the same meaning, being the Latin name of an owl sacred to Minerva, Athena's Roman counterpart.

The little owl is probably most closely related to the spotted owlet (Athene brama). A number of variations occur over the bird's wide range, and there is some dispute over their taxonomy. The most distinct is the pale grey-brown Middle-Eastern type known as the Syrian little owl (A. n. lilith). A 2009 paper in the ornithological journal Dutch Birding (vol. 31: 35–37, 2009) has advocated splitting the southeastern races as a separate species, Lilith's owl (Athene glaux), with subspecies A. g. glaux, A. g. indigena, and A. g. lilith. DNA evidence and vocal patterns support this proposal.

The adult little owl of the most widespread form, the nominate A. n. noctua, is white-speckled brown above, and brown-streaked white below. It has a large head, long legs, and yellow eyes, and its white "eyebrows" give it a stern expression. Juveniles are duller, and lack the adult's white crown spots. This species has a bounding flight like a woodpecker. in the 19th century, and has spread across much of England and the whole of Wales. It was introduced to Otago in New Zealand by the local acclimatisation society in 1906, and to Canterbury a little later, and is now widespread in the eastern and northern South Island; it is partially protected under Schedule 2 of New Zealand's Wildlife Act 1953, whereas most introduced birds explicitly have no protection or are game birds.

thumb|Little owls often nest in hollow tree trunks. ([[Strumpshaw Fen RSPB reserve, Norfolk)]]

This is a sedentary species that is found in open countryside in a great range of habitats. These include agricultural land with hedgerows and trees, orchards, woodland verges, parks and gardens, as well as steppes and stony semi-deserts. It is also present in treeless areas such as dunes, and in the vicinity of ruins, quarries and rocky outcrops. It sometimes ventures into villages and suburbs. In the United Kingdom, it is chiefly a bird of the lowlands, and usually occurs below . In continental Europe and Asia, it may be found at much higher elevations; one individual was recorded from in Tibet. If a male intrudes into the territory of another, the occupier approaches and emits its territorial calls. If the intruder persists, the occupier flies at him aggressively. If this is unsuccessful, the occupier repeats the attack, this time trying to make contact with his claws. In retreat, an owl often drops to the ground and makes a low-level escape. The territory is more actively defended against a strange male as compared to a known male from a neighbouring territory; it has been shown that the little owl can recognise familiar birds by voice.

The little owl is partly diurnal and often perches boldly and prominently during the day. If living in an area with a large amount of human activity, little owls may grow used to humans and will remain on their perch, often in full view, while people are around. The little owl has a life expectancy of about 16 years. When the young disperse, they seldom travel more than about . Pairs of birds often remain together all year round and the bond may last until one partner dies.

In 1843, several little owls that had been brought from Italy were released by the English naturalist Charles Waterton on his estate at Walton Hall in Yorkshire, but these failed to establish themselves. Later successful introductions were made by Lord Lilford on his Lilford Hall estate near Oundle in Northamptonshire and by Edmund Meade-Waldo at Stonewall Park near Edenbridge, Kent. From these areas the birds spread and had become abundant by 1900. The owls acquired a bad reputation and were believed to prey on game bird chicks. They therefore became a concern to game breeders who tried to eliminate them. In 1935, the British Trust for Ornithology initiated a study into the little owl's diet led by the naturalist Alice Hibbert-Ware. The report showed that the owls feed almost entirely on insects, other invertebrates and small mammals and thus posed little threat to game birds.

There is evidence that from the 19th century, little owls were occasionally kept as ornamental birds. In Italy, tamed and docked little owls were kept to hunt rodents and insects in the house and garden.

More common was keeping little owls to use them in so-called cottage hunting. This took advantage of the fact that many bird species react to owls with aggressive behaviour when they discover them during the day (mobbing). Such huntings, particularly with tawny owls, were practiced in Italy from 350 BC until the 20th century and in Germany from the 17th to the 20th century. In Italy, mainly skylarks were caught in this way. The main place of trade was Crespina, a small town near Pisa. Here, little owls were traditionally sold on 29 September, after being taken from their nests and raised in human care.

In 1992, the little owl appeared as a watermark on Jaap Drupsteen's 100 guilder banknote for the Netherlands.

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File:Tétradrachme athénien représentant Athéna.jpg|Athenian tetradrachm coin representing the goddess Athena, with on the reverse a little owl and an olive branch. The lettering ΑΘΕ (ATHE[NA]) is visible on the right.

File:Owl of Athena, Acropolis museum, Athens, Greece-2.jpg|Owl statue, 5th century BC, in the Acropolis Museum, Athens

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References

  • Little Owl videos, photos and sounds on the Internet Bird Collection
  • Little Owl nestcams in The Netherlands
  • Little Owl in New Zealand
  • Ageing and sexing (PDF; 5.5 MB) by Javier Blasco-Zumeta & Gerd-Michael Heinze