||Jos Plateau Indigobird
||Payne, R. B. 1982. Species limits in the Indigobirds (Ploceidae, Vidua) of West Africa: mouth mimicry, song mimicry, and description of new species. Miscellaneous Publications, Museum of Zoology, University of Michigan 162: 1-96.
||Described as new to science by Payne (1982).
||12 cm. A small, black finch with a pale bill. Nuptial plumage male has an all black plumage with a green glossy sheen. The flight feathers are brown and appear pale in contrast to remainder of plumage. The bill, legs and toes appear white in the field. Close inspection of legs and toes show a purplish cast. Similar spp. Within its very restricted range there no other indigo birds have been seen. Voice Mimics the trilling song and calls of the Rock Firefinch. Hints A search in the breeding season of the Panshanu Pass, Taboru Hill near Jos and at Kagora in northern Nigeria might produce this species.
|Red List Category & Criteria:
||Butchart, S. & Symes, A.
||Hogberg, S., Nursahid, R. & Hall, P.
||Ekstrom, J., Butchart, S., Harding, M., Fisher, S., Symes, A., Gilroy, J.
Although this species may have a small range, it is not believed to approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
|Previously published Red List assessments:|
- 2009 – Least Concern (LC)
- 2008 – Least Concern (LC)
- 2004 – Least Concern (LC)
- 2000 – Lower Risk/least concern (LR/lc)
- 1994 – Not Recognized (NR)
- 1988 – Not Recognized (NR)
|Range Description:||Vidua maryae was first discovered in 1968, but has only been considered a distinct species since 1995. It is endemic to the Jos Plateau and its north and eastward extensions, in northern Nigeria, where it is known from Panshanu, Taboru near Jos and Kagoro (Payne 1998), and has an estimated global Extent of Occurrence of 26,000 km2. The global population size has not been quantified, but the species is not believed to approach the thresholds for the population size criterion of the IUCN Red List (i.e. less than 10,000 mature individuals in conjunction with appropriate decline rates and subpopulation qualifiers). Global population trends have not been quantified, but populations appear to be stable; one site (Panshanu) is within the Magama Forest Reserve, where the vegetation is apparently little changed since 1968 (Payne 1998). It may be more common and widespread than records suggest, as it is difficult to identify outside the breeding season (J. Abalaka in litt. 2007, S. Hogberg in litt. 2007). Therefore, the species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e. declining more than 30% in ten years or three generations). For these reasons, the species is evaluated as Least Concern. |
|♦ Continuing decline in area of occupancy (AOO):||Unknown|
|♦ Extreme fluctuations in area of occupancy (AOO):||No||♦ Estimated extent of occurrence (EOO) - km2:||10900|
|♦ Continuing decline in extent of occurrence (EOO):||Unknown||♦ Extreme fluctuations in extent of occurrence (EOO):||No|
|♦ Continuing decline in number of locations:||Unknown|
|♦ Extreme fluctuations in the number of locations:||No||♦ Lower elevation limit (metres):||800|
|♦ Upper elevation limit (metres):||1200|
|Range Map:||Click here to open the map viewer and explore range.|