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NRLD - 330513 | Recurvirostra avosetta

Assessment ID
330513
Taxon name
Recurvirostra avosetta
Linnaeus, 1758
Uploaded by
National Red List Database
Taxonomic information
Scientific name
Recurvirostra avosetta
Linnaeus, 1758
Assessed taxon level
Species
Higher level taxonomic groupings
Vertebrates
Birds
Kingdom
Animalia
Phylum
chordata
Class
aves
Order
charadriiformes
Family
recurvirostridae
Genus
Recurvirostra
Species
avosetta
Species authority
Linnaeus, 1758
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
This species has a very small breeding population in the UAE, which might qualify it for listing as Critically Endangered. However, the population is increasing rapidly within the country and is stable in the wider Arabian Peninsula; thus, the potential for immigration from outside the UAE remains very high. Therefore, the species's status has undergone a regional adjustment down one category, classifying it as Endangered.The non-breeding population is also relatively small, and would qualify as Endangered, but it could also rescued by breeding populations from outside the country. Therefore overall, the non-breeding population would be listed as Vulnerable at the national level after a regional adjustment, if the breeding population were not to take precedence for the final Red List status.
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 is a resident in the area of the Al Wathba Wetland Reserve, where up to eight pairs have been breeding almost annually since 1996 (Pedersen et al. 2017). Moreover, it is an uncommon passage migrant and wintering bird between September and March, with occasional records in other months (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
The breeding population is restricted to open, swampy habitats like shallow waste water sites with rich invertebrate life (Jennings 2010). During migration, the species occurs at any kind of wetland on the coast or further inland, while wintering birds are usually found at shallow, sheltered coastal waters like brackish lagoons (Jennings 2010). Densely vegetated wetlands are not suitable as habitat nor as a foraging site (Jennings 2010). There is no information available about its diet in the UAE or in Arabia; elsewhere it feeds on aquatic invertebrates like insects and larvae, but also worms, crustaceans and occasionally fish, which are taken by scything the bill through the water while walking forward (Jennings 2010). The breeding season lasts from April until July (Jennings 2010). The species nests colonially on small islands in low vegetation near shallow water (Jennings 2010, Aspinall and Porter 2011). The nest is usually a scrape, sometimes with a raised rim and lined with plant material, which may be positioned in a variety of sites including on bare sand and dried mud (Johnsgard 1981, del Hoyo et al. 1996, Jennings 2010). Clutches contain three to four, sometimes up to six eggs (Jennings 2010). The species is partly migratory. Individuals wintering in the UAE or passing through the country on migration breed in central Eurasia (Jennings 2010). It is unclear whether the breeding population in Arabia is resident or if it migrates southward after breeding, to be replaced by wintering migrants from northern breeding grounds (Jennings 2010).
Threats and conservation measures listed
Threats listed in assessment
The most relevant threats within UAE are changes in coastal land-use and the possibility of oil pollution, but the severity of these threats towards the species is unknown.Individuals of this species that visit UAE are threatened by a range of threats that operate outside of the country. For instance, the species is threatened in Europe by the pollution of wetlands with polychlorinated biphenyls (PCBs), insecticides, selenium, lead and mercury (del Hoyo et al. 1996).;The species is susceptible to avian botulism (Blaker 1967, Hubalek et al. 2005) and avian influenza (Melville and Shortridge 2006) so may be threatened by future outbreaks of these diseases.
History
There were no breeding records in 1996, and so the genuine change to be looked at here is for the non-breeding population.Wintering (non-breeding) population in 1996 is thought to have been c. 200 individuals, qualifying as EN, downlisted to VU, the same category as the non-breeding population would receive now if the breeding population did not take precedence.
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