Data Zone
Justification of Red List category
This previously poorly known species has recently been found to be common and widespread across much of New Caledonia, where its favoured open grassy habitat is not immediately threatened, it remains numerous in close proximity to human habitation and does not appear to be declining owing to predation by invasive species. It has consequently been downlisted to Least Concern.
Population justification
The population is placed in the band 2,500-9,999 individuals, equating to 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals.
Trend justification
The species's population is suspected to be stable as is not thought to have suffered from habitat loss and there is no evidence that it is susceptible to predation by invasive species.
This species, endemic to New Caledonia (to France), is secretive and often overlooked, but recent surveys have found it to be numerous and widely distributed. It is under-recorded by traditional survey methods but it is now considered common in all the massifs of the center from Hienghène (Todine Gaitada) to the Humbold massif (V. Chartendrault in litt. 2007, 2009), also occurring on 50% of mountain massifs in the north of the island and 37% of those in the south (Chartendrault & Barré 2005, Chartendrault & Barré 2006). It is absent from the Ile des Pins and the Loyalty Islands.
It is usually very secretive, rarely venturing into the open, but sometimes seen in short flights over vegetation. It is present in the maquis minier (mining bush) at high elevations (450-900 m on the Koniambo; 900-1000 m on the Koghis, Mont Mou; 400-500 m in the small talwegs of the Col d'Amos) where it favours habitats composed of a mixture of shrubs, grassy weeds and ferns, including Hibbertia altigena, Knightia deplanchei, Costularia and Gleichenia. The Gleichenia fern produces a dense cover and seems to be well correlated with the presence of the bird. This is apparently a pioneer plant associated with bush fire, which may indicate that the extent of suitable habitat may be increasing. But the bird is much more common in grassy/shrubby areas of non-ultramafique massifs, i.e. Melaleuca savannas and grasslands, and has also been found to be common at lower elevations (< 50 m) around rural dwellings and in secondary bushy (Goyava) vegetation and in tall grass/small trees at 200-300 m.
Rats (Rattus rattus and R. exulans) and cats are widespread and common even on remote elevated mountains, but there is no evidence that these are causing a decline and the species remains common in close proximity to villages, suggesting it is not particularly susceptible to predation (V. Chartendrault in litt. 2007, 2009). Natural regeneration of forests could locally reduce available habitat but bush fires, grazing and human modification mean the extent of open habitat in New Caledonia is not under threat and is probably increasing, and the species remains common in anthropogenic habitats.
Conservation Actions Underway
Extensive surveys were conducted in 2003-2006 by the Institut Agronomique néo-Calédonien (IAC) to establish the status of poorly known and threatened New Caledonian birds including Megalurus mariei (N. Barré in litt. 2002, Chartendrault & Barré 2005, Chartendrault & Barré 2006).
Text account compilers
Dutson, G., Ekstrom, J., Benstead, P., O'Brien, A., Symes, A., Mahood, S.
Contributors
Dutson, G., Barré, N., Létocart, Y., Spaggiari, J., Chartendrault, V., Meresse, C.
Recommended citation
BirdLife International (2024) Species factsheet: New Caledonian Thicketbird Cincloramphus mariae. Downloaded from
https://datazone.birdlife.org/species/factsheet/new-caledonian-thicketbird-cincloramphus-mariae on 23/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 23/11/2024.