Stubble quail

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Stubble quail
Stubble Quail (Coturnix pectoralis) male (14377891677), crop.jpg
Coturnix pectoralis South Australia.jpg
In New South Wales and South Australia respectively
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Galliformes
Family: Phasianidae
Genus: Coturnix
Species:
C. pectoralis
Binomial name
Coturnix pectoralis
Gould, 1837
Stubble Quail.png
Distribution
   common
   nomadic
Drawing of the head of a stubble quail Head of Coturnix pectoralis - Herbert Goodchild.jpg
Drawing of the head of a stubble quail

The stubble quail (Coturnix pectoralis) is a native Australian species which is the most common quail species in Australia. [2] The species is not under any threat of extinction (IUCN Least Concern). [3] Stubble quail are widespread and found throughout all states and territories of Australia excluding Tasmania. [4] Other common names include grey quail and pectoral quail. [5]

Contents

Taxonomy

The stubble quail is a member of the family Phasianidae. [3] [6] C. pectoralis has sometimes been considered conspecific with the extinct New Zealand quail, C. novaezealandiae. In this case, the latter species' name would have priority and the stubble quail would become Coturnix novaezelandiae pectoralis. Phylogenetic analysis of three separate mitochondrial control region sequences in 2009 showed a close phylogenetic relationship between the two birds and it was confirmed that they are separate species. Geographic isolation occurred between the Australian species and the New Zealand species when the Tasman Sea became too wide for the birds to fly the journey. This geographic isolation enabled genetic divergence to occur and two separate species were produced. The two species then independently lost the ability to fly long distances. [7]

Description

The stubble quail is a ground dwelling bird that is characterised by its dark brown feathers with a cream coloured strip down the centre of each feather giving rise to stripes down the length of the bird. It is a plump species that is larger than other native quails. Male birds will mature at about 18.0–18.5 cm long and females are generally slightly larger. [8] Adult males weigh around 100g and the females around 110g with all birds having a wingspan of between 25–33 cm. [9] The stubble quail can also be identified by the loud whirring noise made by their wings during take-off into flight once disturbed from on the ground.

Similar species

The brown quail is also a member of the family Phasianidae that looks similar to the stubble quail, however the brown quail appears darker in colour. The white streaks that are obvious on the back of the stubble quail are thinner and less obvious on the brown quail. The brown quail does not have white streaks underneath its body like the stubble quail, but has black horizontal bars instead. This makes the brown quail look much darker than the stubble quail in flight. The brown quail's wings produce a whistling noise when flushed which is different from the whirring sound produced by the stubble quail's wings. [9] The plains-wanderer is a highly endangered native species that looks very similar to the stubble quail but can be distinguished by their long yellow legs that can be observed during flight. [2] The little buttonquail is a member of the family Turnicidae but is another species that is sometimes confused with the stubble quail. The little button-quail is a smaller bird with short, round wings and often makes a call of alarm when flushed, whereas stubble quail are vocally silent. [9]

Distribution and habitat

Stubble quail are found in a diverse range of habitats from very dry parts of Australia [10] to alpine grasslands. [11] Stubble quail are more common in the high rainfall areas of southeastern and western Australia though are often found in the arid zone after above average rainfall. [9] The species was found in all Australian states including Tasmania up until the 1940s to 1960s when they became extinct in Tasmania. [4] On the mainland stubble quail are found in a variety of biomes but tend to avoid wooded areas as the canopy obstructs the growth of thick grassy undergrowth that they prefer. [9] They prefer a habitat of tall grassland made up of native or introduced grasses, and crops. [2] The density of the ground cover is highly important for stubble quail habitat as the birds prefer very dense vegetation. [8] A high density of kangaroos and rabbits (or any grazing animal) in an area can decrease the height and density of grassland vegetation and make the habitat unsuitable for stubble quail. [12] They are frequently found in agricultural areas after the harvest of cereal crops, [6] where they feed on grain and insects. [4]

Behaviour

Breeding

Eggs, Collection Museum Wiesbaden Coturnix pectoralis MWNH 1116.JPG
Eggs, Collection Museum Wiesbaden

In Victoria the stubble quail breed between August and December, [8] but breeding season can vary due to environmental conditions. [13] Breeding pairs may stay together for all year and if a pair is separated when flushed, they will call to each other in order to locate each other. [9] The female stubble quail lays about seven or eight yellow eggs which are incubated solely by her for 18 days. [2] Often stubble quail nest in crops that are about to be harvested so their nests get destroyed. [4] Both parents guard the chicks until they are almost full-sized birds, [9] but once the chicks reach six weeks and have a full plume of feathers, their parents remove the chicks from their own breeding grounds. [8] Males call at dawn and dusk as a territorial display. [9]

Travel

Stubble quail are nomadic and move to available resources; however, when resources are very limited, they tend to scatter in all directions. [14] They can travel very long distances with the furthest recorded at 1142 km. [4] Stubble quail are usually sighted individually or in pairs though are sometimes seen in small groups of up to 20 birds. [2] Larger groups will be present in areas where the conditions are good. [9]

Threats

Foxes and cats are their biggest predators, especially when nesting. [8] Humans also reduce the numbers of stubble quail as they can legally be hunted in some parts of Australia. However, there are strict regulations in place to ensure that they are not hunted at times when the population is weak such as breeding, moulting and environmental stress. [2]

Evolutionary adaptations

The stubble quail has many evolutionary adaptations that enable it to live in very dry conditions. These include low daily water requirements, high tolerance of saline water and the ability to produce highly concentrated waste products. [10] Highly concentrated urine is achieved by the large medulla in the kidney which is present in the stubble quail. If the birds have access to green foliage as well as grain, the stubble quail can survive without drinking any water. [6] In areas where temperatures are very hot, stubble quail have been observed to forage during the night. [15] Stubble quail that live in arid areas can have very irregular breeding patterns that are more dependent on environmental conditions than day length. This takes advantage of resources such as food and water, for their chicks. [13] The stubble quail are thermally neutral at 30–35 °C so in some habitats where temperatures fall below 0 °C a large amount of energy is expended maintaining body temperature. [15]

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References

  1. BirdLife International (2016). "Coturnix pectoralis". IUCN Red List of Threatened Species . 2016: e.T22678952A92795607. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22678952A92795607.en . Retrieved 12 November 2021.
  2. 1 2 3 4 5 6 Anonymous (1 September 2013). "Stubble Quail". State Government Victoria: Department of environment and primary industries. Retrieved 12 October 2013.
  3. 1 2 Anonymous. (No date). "Coturnix (Coturnix) pectoralis Gould, 1837". Atlas of Living Australia – An Australian Government Initiative. Retrieved 12 October 2013.
  4. 1 2 3 4 5 Blakers, M., Davies, S.J.J.F. & Reilly, P.N. (1984). The atlas of Australian birds. Victoria: Melbourne University Press.
  5. Anonymous. (1969). An Index of Australian Bird Names. Division of Wildlife Research Technical Paper, 20, 93. Canberra : CSIRO. Sited in: No author (updated 4 July 2013). Species Coturnix (Coturnix) pectoralis Gould, 1837. Australian Government: Department of Environment. Retrieved 12 October 2013 from https://biodiversity.org.au/afd/taxa/Coturnix%20%28Coturnix%29%20pectoralis
  6. 1 2 3 Roberts, J.R. & Baudinette, R.V. (1984). The water economy of Stubble Quail, Coturnix pectoralis, and King Quail, Coturnix chinensis. Australian Journal of Zoology, 32(5), 637–647. DOI: 10.1071/ZO9840637.
  7. Seabrook-Davidson, M., Huynen, L., Lambert, D.M. & Brunton, D.H. (2009). Ancient DNA resolves identity and phylogeny of New Zealand’s extinct and living quail (Coturnix sp.). PLOS One, 4(7), 1–7. DOI: 10.1371/journal.pone.0006400
  8. 1 2 3 4 5 Anonymous (1 September 2013). "Introduction to property based game management – Stubble Quail". State Government Victoria: Department of environment and primary industries. Retrieved 12 October 2013.
  9. 1 2 3 4 5 6 7 8 9 Marchant, S. & Higgins, P.J. (Eds.). (1993). Handbook of Australian, New Zealand and Antarctic birds (Vol. 2). Melbourne, Oxford University Press.
  10. 1 2 Roberts, J.R., Baudinette, R.V. & Wheldrake, J.F. (1984). Renal clearance studies in Stubble Quail Coturnix pectoralis and King Quail Coturnix chinensis under conditions of hydration, dehydration, and salt loading. Physiological Zoology, 58(3), 340–349. Retrieved 12 October 2013 from https://www.jstor.org/stable/30156005.
  11. Osborne, W.S. & Green, K. (1992). Seasonal changes in composition, abundance and foraging behavior of birds in the snowy mountains. EMU, 92(2), 93–105. DOI: 10.1071/MU9920093.
  12. Neave, H.M. & Tanton, M.T. (1989). The effects of grazing by Kangaroos and Rabbits on vegetation and the habitat of other fauna in the Tidbinbilla Nature Reserve, Australian Capital Territory. Australian Wildlife Research, 16(3), 337–351. DOI: 10.1071/WR9890337
  13. 1 2 Frith, H.J. & Carpenter, S.M. (1980). Breeding of Stubble Quail, Coturnix pectoralis, in South-Eastern Australia. Wildlife research, 7(1), 117–137. DOI: 10.1071/WR9800117.
  14. Frith, H.J. & Waterman, M.H. (1977). Movements of Stubble Quail, Coturnix pectoralis, from South Australian grain fields. Australian Wildlife Research, 4(1), 85–90. DOI: 10.1071/WR9770085.
  15. 1 2 Roberts, J.R. & Baudinette, R.V. (1986). Thermoregulation, oxygen consumption, and water turnover in Stubble Quail, Coturnix pectoralis, and King Quail, Coturnix chinensis. Australian Journal of Zoology, 34(1), 25–33. DOI: 10.1071/ZO9860025