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NRLD - 330591 | Gymnoris xanthocollis

Assessment ID
330591
Taxon name
Gymnoris xanthocollis
(Burton, 1838)
Uploaded by
National Red List Database
Taxonomic information
Scientific name
Gymnoris xanthocollis
(Burton, 1838)
Assessed taxon level
Species
Higher level taxonomic groupings
Vertebrates
Birds
Kingdom
Animalia
Phylum
chordata
Class
aves
Order
passeriformes
Family
passeridae
Genus
Gymnoris
Species
xanthocollis
Species authority
(Burton, 1838)
Taxonomic notes and synonyms listed
Gymnoris xanthocollis (del Hoyo and Collar 2016) was previously placed in the genus Petronia following AERC TAC (2003); Cramp and Simmons (1977-1994); Sibley and Monroe (1990, 1993).
Location and scope
Specific locality or subnational name or regional name
United Arab Emirates (the)
Scope (of the Assessment)
National
Countries included within the scope of the assessment
United Arab Emirates (the)
Country ISO code(s)
ARE
Does the assessment cover a marine EEZ area(s)?
Not_assigned
Conservation Status
Assessed as
Endangered
Abbreviated status
EN
Qualifying criteria (if given)
D
Criteria system used
IUCN

(see Assessment details)

Assessment rationale/justification
The population size of this species within the UAE is potentially very small, potentially as low as 100 mature individuals, and the population is suspected to be declining. Therefore, the species is assessed as Endangered, without applying a regional adjustment.
Assessment details
Year assessed
2019
Assessors/contributors/reviewers listed
UAE National Red List Workshop
Criteria system used
IUCN
Reference for methods given
IUCN. 2012. IUCN Red List Categories and Criteria: Version 3.1, Second edition. IUCN, Gland, Switzerland and Cambridge, UK. iv + 32pp pp. And IUCN. 2012. Guidelines for Application of IUCN Red List Criteria at Regional and National Levels: Version 4.0. Gland, Switzerland and Cambridge, UK: IUCN. iii + 41pp.
Further information
Endemism (according to assessment)
Endemic to region
Not assigned
Taxon distribution as listed in assessment
This species breeds in the northern and eastern UAE, where it is common but localized (Jennings 2010, Pedersen et al. 2017). Occurrences in the southern and western parts of the country as well as in islands during March/April and September/October are likely to be of migrant individuals on passage to and from the breeding grounds (Pedersen et al. 2017).
Is there a map available in assessment?
Yes
Habitat and systems
Ecological system type
Terrestrial
Not_assigned
Freshwater
Not_assigned
Marine
Not_assigned
Habitat
Habitat details as listed in assessment
This species is found in open dry woodland, but sometimes also in cultivated areas with scattered trees or hedgerows, generally avoiding sandy desert (Jennings 2010, Aspinall and Porter 2011, Summers-Smith 2019). It has a strong preference for Ghaf (Prosopis cineraria) and acacia trees; however, during passage, almost any type of woodland is utilised, including mangroves, parks and large gardens (Jennings 2010). During the breeding season, the diet mainly consists of insects, in particular Orthoptera and Cicadidae, which are collected in the canopy of trees (Jennings 2010). Individuals on passage take nectar from flowering Eucalyptus and probably also Ghaf trees (Jennings 2010). Individuals arrive to the breeding grounds within the UAE from late March to April, when territories are established and males start singing. The breeding period is not known exactly, but it is assumed that three to four eggs are laid in April/May, which are incubated by the female, and juveniles fledge between mid-May and early July (Jennings 2010). Nests have not been described for the UAE. Elsewhere, they consist of; dry grass, wool and hair, lined with feathers. They are usually placed in a crevice in a tree or shrub in more than 2 m height. There might be competition for nest sites with other hole-breeders, including Common Myna (Acridotheres tristis) and Pallid Scops-owl (Otus brucei) (Jennings 2010).
Threats and conservation measures listed
Threats listed in assessment
Loss of woodland (e.g. Acacia and Prosopis), would have an impact on this species (see Aspinall 1996). Development in certain areas would also likely pose a threat to this species. There is some trade in this species, but this is only thought to involve imported individuals rather than capture from the wild within the country (Aspinall 1996).
History
This species breeding in Ghaf groves, which have declined since 1996 and it is possible that the species doesn't adapt to altered habitats; which means that this species is suspected to be undergoing a decline within the UAE. While the 1996 population estimate of Aspinall (1996) is considered to be an overestimate, it is still considered here that the species would have warranted a listing of Least Concern in 1996, whereas now it is assessed as Endangered.
Publication
Burfield, I.J., Westrip, J., Sheldon, R.D., Hermes, C., Wheatley, H., Smith, D., Harding, K.A. Allen, D.J. and Alshamsi, O. 2021. UAE National Red List of Birds. Ministry of Climate Change and Environment, Dubai, United Arab Emirates