Naretha bluebonnet

The Naretha bluebonnet (Northiella narethae) is an Australian parrot, one of two species in the genus Northiella. It is closely related to, and was considered a subspecies of, the eastern bluebonnet.

Naretha bluebonnet
Naretha Bluebonnet
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Psittaciformes
Family: Psittaculidae
Genus: Northiella
Species:
N. narethae
Binomial name
Northiella narethae
(White, HL, 1921)

History

It was first described by Henry Luke White in 1921 as Psephotus narethae. An associate of White's, the field worker F. Lawson Whitlock, had come across a railway official on the Trans-Australian Railway with a pet parrot that had been caught at Naretha, which corresponded with no known species.[1] Later, White was heading to Western Australia on business and stopped in Zanthus to talk to the official and obtained three skins which he conveyed to the museum in Melbourne.[1] The bluebonnet species was included for some time in the Psephotus genus; with the naretha; despite the very pronounced physical and behavioural differences to other birds in this genus. One of the biggest differences being that unlike the obvious sexual dimorphism of the Psephotus genus, the naretha (and bluebonnets in general) sexual colouration of plumage is alike. The bluebonnet also has pointed or spatulate tips on the first five primary flight feathers. The behavioural variations of bluebonnets include characteristic jerky, bobbing movements which are accentuated with excitement or fear and they have very unique call notes; unlike any other Australian bird.[2] The Naretha parrot was subsequently classified as a subspecies (N. h. narethæ) of Northiella haematogaster, the eastern bluebonnet.[3] A molecular study published in 2015 by Gaynor Dolman and Leo Joseph confirmed its genetic isolation from the eastern bluebonnet and recommended it be reinstated as a separate species.[4][5] Why the name Naretha? Mr Henry White; the man mentioned above was a wealthy pastoralist and was also a well known ornithologist and collector. He had enlisted the services of Mr Whitlock to collect avifauna on this occasion in the areas of the western Nullarbor plain; during these times - in the late 1910s Australia was creating a significant east-west railway network- and Mr Whitlock travelled to the area via train. Mr Whitlock set up his exploration camp at the railway siding settlement of Zanthus and it was while he was staying at this town he "saw" the pet bird of a railway employee, Mr deMarcaux, and it was a bird he had not seen before. Mr deMarcaux told Mr Whitlock this pet bird had been taken from a nest, 5 years earlier at the railway line settlement of Naretha; which was 120km to the east of Zanthus.[6]

Description

The Naretha bluebonnet is smaller than the eastern bluebonnet, at around 28 cm (11 in) in length. The legs and feet are dark grey, and the iris is dark brown. The adult male has a two tonal facial pattern with a lighter green-blue forehead, lores and area above the eye contrasting with the rest of the face which is a purplish-blue. The light grey-brown head, foreneck and breast are marked with pale steaks and diffuse spots. The back is olive-grey. The belly, vent and thighs are a uniform yellow with the red being restricted to the undertail-coverts area. The lesser wing coverts are blue and outer median wing coverts red, while the inner median and greater wing coverts, and inner secondaries a yellow-olive colour. The central tail feathers are tinged with pale blue. The adult female has a duller blue on the forehead,[7] and reduced colour on wings and tail,[1] and with no tint of orange on the belly.[7] It is smaller overall at around 26 cm (10 in) in length.[1]

Distribution and habitat
nesting hollow, 1901

The Naretha bluebonnet is reported to have been common in the arid Nullarbor region, and became rarer during the Twentieth century. The localised range of individuals is thought to make the species highly endemic to an area on the border of Western and South Australia.[5][8] Narethas are located in what is termed the Myall woodlands - this is a woodland predominated by Acacia species.[9][10] The naretha homelands extend over a large and isolated range. They are often observed more readily in areas where water has become an altered focal point - notably water troughs for stock.[11]

Breeding

Breeding takes place in hollows in she-oak trees. The oval eggs are matte white.[1] Breeding begins early and narethas are laying their first eggs by mid July. In the wild the tree chosen is in general a casurina tree and generally have small knot hole entrances. However observers have also reported they have seen hens emerge from tree crevices and splits rather than actual holes. The scarcity of suitable trees in the naretha homelands is perhaps the most likely explanation as to why a bird would squeeze itself in such a small space.[12]

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gollark: osmarks.net's source is on git too, it might just be somewhat outdated if I'm doing testing.
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gollark: I will vote on it in the unknowable future.
gollark: Gitea was easy enough, just had to `pacman -S gitea`, edit a several hundred line config file, `systemctl enable --now gitea`.

References
  1. White, Henry Luke (1921). "The Naretha Parrot (Psephotus narethae) sp. nov". Emu. 21 (2): 81–82. doi:10.1071/MU921081.
  2. Sindel, S; Gill, J (1996). Australian Grass Parrakeets The Psephotus and Northiella Genra. Australia: Singil Press. p. 173. ISBN 0958772754.
  3. Christidis, Les; Boles, Walter E. (2008). Systematics and Taxonomy of Australian Birds. Canberra: CSIRO Publishing. p. 155. ISBN 978-0-643-06511-6.
  4. Dolman, Gaynor; Joseph, Leo (2015). "Evolutionary history of birds across southern Australia: structure, history and taxonomic implications of mitochondrial DNA diversity in an ecologically diverse suite of species". Emu. 115 (1): 35–48. doi:10.1071/MU14047.
  5. Morcombe, Michael (1986). The great Australian birdfinder. Sydney: Lansdowne Press. p. 320. ISBN 0701819626.
  6. Sindel, S; Gill, J (1996). Australian Grass Parrakeets The Psephotus and Northiella Genra. Australia: Singil Press. p. 191. ISBN 0958772754.
  7. Lendon, Alan H. (1973). Australian Parrots in Field and Aviary (2nd. ed). Sydney: Angus and Robertson. pp. 229–33. ISBN 0-207-12424-8.
  8. Forshaw, Joseph M. (2010). Parrots of the World. Princeton University Press. p. 130. ISBN 9781400836208.
  9. https://www.environment.gov.au/system/files/resources/2edcda80-d9b7-49d4-9e97-36236b91e9f9/files/mvg13-nvis-acacia-open-woodlands.pdf
  10. Gearing W & L/ 2018/Parrots Magazine/ Issue 247/ August 2018/ 'The Narrie bluebonnet"/ pp26-29
  11. Gearing, W & L /July - August 2014/Parrot society of Australia News / volume 24.4/"Such is life on the saltbush"/ pp22-26
  12. Gearing, W & L/ 2011/ Australian Aviary Life/ Jan-Feb 2011/ issue 01/ Saltbush Whispers/pp6 - 9
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