Thai National Parks

Birds of Thailand

Species of Thailand

Spotted owlet

Thai: นกเค้าจุด, nok khao jud

Binomial name: Athene brama, Coenraad Jacob Temminck, 1821

The spotted owlet (Athene brama) is a small owl which breeds in tropical Asia from India to Southeast Asia. A common resident of open habitats including farmland and human habitation, it has adapted to living in cities. They roost in small groups in the hollows of trees or in cavities in rocks or buildings. It nests in a hole in a tree or building, laying 3–5 eggs. The species is absent from Sri Lanka, although the birds are found across the Palk Straits, just 30 kilometres away at Rameshwaram. Nests near human habitations may show higher breeding success due to increased availability of rodents for feeding young. The species shows great variation including clinal variation in size and forms a superspecies with the very similar little owl.

Description

The spotted owlet is small (21 cm) and stocky. The upperparts are grey-brown, heavily spotted with white. The underparts are white, streaked with brown. The facial disc is pale and the iris is yellow. There is a white neckband and supercilium. Sexes are similar. The flight is deeply undulating. The nominate form is darker than the paler forms such as indica of drier regions.

Subspecies

Early workers sometimes treated members of this species group as subspecies of Athene noctua. The two have been separated but they are considered to form a superspecies complex. Several subspecies have been described and about four or five are widely accepted (the race poikila is invalid and refers to Aegolius funereus A. b. fryi of southern India described by Stuart Baker and A. b. mayri described by Deignan from northern Thailand are not usually recognized.). The five widely recognized subspecies are albida Koelz, 1950 of western Asia in Iran and Pakistan; indica (Franklin, 1831) of northern India; brama (Temminck, 1821) of southern India which is darker than indica; ultra Ripley, 1948 (not always recognized) of northeastern India is said to have the white spots on mantle much and "higher pitched calls"; and pulchra Hume, 1873 of Southeast Asia from Myanmar and Thailand extending into Cambodia and Vietnam. The northern and southern Indian populations intergrade and there is no dividing boundary. The northern indica populations have the upperparts brownish. Size decreases from north to south. The species is not found in Sri Lanka, although birds on the Indian mainland are found even at the tip of Rameshwaram.

Behaviour and ecology

This species is nocturnal but is sometimes seen in the day. When disturbed from their daytime site, they bob their head and stare at intruders. It can often be located by the small birds that mob it while it is perched in a tree. It hunts a variety of insects and small vertebrates. In Pakistan they have been found to take mostly insect prey. In the arid region of Jodhpur, they have been found to take more rodents (especially in the genus Mus and tend to avoid other rodents such as Tatera) prior to the breeding season. Bats, toads, small snakes such as Ramphotyphlops braminus have been noted. They may also take scorpions and molluscs.

The call is a harsh and loud churring and chuckling chirurr-chirurr-chirurr ending with a chirwak-chirwak and they call mainly during early dawn or just after sunset.

The breeding season is November to April. Courtship behaviour includes bill grasping, allopreening and ritual feeding. The female may call with the male, bob head and deflect its tail in invitation. The social organization of family groups is not clear and multiple males may copulate with a female and females may attempt pseudocopulation, possibly a kind of displacement behaviour. They nest in cavities often competing with other hole-nesters such as mynas. They may also nest in holes in vertical embankments. The nest may be lined with leaves and feathers or may use the existing lining from a prior occupant. The typical clutch is made up of three or four spherical white eggs (30.9mm long and 26.3 mm wide, 11.6g) and incubation begins with the first laid eggs leading to a wide variation in the size of the chicks. The young are fed initially on insects such as cockroaches and later fed small vertebrate prey such as mice (a toad Bufo stomaticus has been noted in Gujarat). The chicks gain weight during the early stages but lose weight before fledging. Only one or two chicks may fledge and they leave the nest in about 20–28 days.

The brain has a pineal gland, a feature formerly thought to be absent in the owls. Birds show variation in the melatonin concentration between day and night. A high melatonin level is associated with sleep and low levels are associated with high alertness and foraging activity. Spotted owlets, however, show only a slightly lower melatonin concentration at night with a slight increase in the early afternoon. Other owls such as the barn owl show little day-night variation. Seasonal changes in glandular activity have been associated with environmental factors such as temperature and humidity.

A coccidian parasites, Eimeria atheni, has been described from this species. An ectoparasitic mite, Neocheletiella athene, has been described from a specimen from the Antwerp zoo. Bird lice of the species Colpocephalum pectinatum are known to be ectoparasites.

In culture

These birds, being very familiar to humans especially with their loud calling, have been associated with bad omens. The species name brama is from the French name Chouette brame and indirectly refers to this owl's Indian habitat by way of homage to Brahma, the Hindu supreme spirit. In Hindu mythology the owl is a vahan (mode of transport) of Lakshmi, goddess of wealth.

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Scientific classification

Kingdom
Animalia
Phylum
Chordata
Class
Aves
Order
Strigiformes
Family
Strigidae
Genus
Athene
Species
Athene brama

Common names

  • Thai: นกเค้าจุด, nok khao jud

Synonyms

  • Noctua indica, James Franklin (1831)
  • Carine brama

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)

Distribution map of Spotted owlet, Athene brama in Thailand
  • Ban Phai District, Khon Kaen
  • Bang Pa In District, Phra Nakhon Si Ayutthaya
  • Bang Pahan District, Phra Nakhon Si Ayutthaya
  • Bang Phra Non-hunting Area
  • Bangkok Province
  • Bueng Boraped Non-hunting Area
  • Chiang Dao District, Chiang Mai
  • Chiang Dao Wildlife Sanctuary
  • Chiang Saen District, Chiang Rai
  • Doi Inthanon National Park
  • Doi Pha Hom Pok National Park
  • Doi Suthep-Pui National Park
  • Hat Wanakon National Park
  • Huai Chorakhe Mak Reservoir Non-hunting Area
  • Huai Krachao District, Kanchanaburi
  • Kaeng Khoi District, Saraburi
  • Kaeng Krachan District, Phetchaburi
  • Kaeng Krachan National Park
  • Kamphaeng Saen District, Nakhon Pathom
  • Kantharawichai District, Maha Sarakham
  • Khao Sam Roi Yot National Park
  • Khao Yai National Park
  • Khao Yoi District, Phetchaburi
  • Khlong Luang District, Pathum Thani
  • Khung Kraben Non-hunting Area
  • Kui Buri National Park
  • Laem Pak Bia
  • Mae Ai District, Chiang Mai
  • Mae Wong National Park
  • Mueang Chiang Mai District, Chiang Mai
  • Mueang Khon Kaen District, Khon Kaen
  • Mueang Lopburi District, Lopburi
  • Mueang Nakhon Sawan District, Nakhon Sawan
  • Mueang Nonthaburi District, Nonthaburi
  • Mueang Pathum Thani District, Pathum Thani
  • Mueang Phetchaburi District, Phetchaburi
  • Mueang Phitsanulok District, Phitsanulok
  • Mueang Ratchaburi District, Ratchaburi
  • Mueang Sukhothai District, Sukhothai
  • Mueang Tak District, Tak
  • Pak Chong District, Nakhon Ratchasima
  • Pak Thale
  • Phatthana Nikhom District, Lopburi
  • Pho Prathap Chang District, Phichit
  • Phra Nakhon Si Ayutthaya District, Phra Nakhon Si Ayutthaya
  • Phutthamonthon District, Nakhon Pathom
  • Sai Yok District, Kanchanaburi
  • Samae San Island
  • Samut Prakan Province
  • Sanam Bin Reservoir Non-hunting Area
  • Si Satchanalai District, Sukhothai
  • Sikhio District, Nakhon Ratchasima
  • Taphan Hin District, Phichit
  • Tha Yang District, Phetchaburi
  • Thap Lan National Park
  • Wat Phai Lom & Wat Ampu Wararam Non-hunting Area

Range map of Athene brama in Thailand

Important note; our range maps are based on limited data we have collected. The data is not necessarily accurate or complete.

Special thanks to Ton Smits, Parinya Pawangkhanant, Ian Dugdale and many others for their contribution for range data.

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