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NRLD - 330551 | Tachybaptus ruficollis

Assessment ID
330551
Taxon name
Tachybaptus ruficollis
(Pallas, 1764)
Uploaded by
National Red List Database
Taxonomic information
Scientific name
Tachybaptus ruficollis
(Pallas, 1764)
Assessed taxon level
Species
Higher level taxonomic groupings
Vertebrates
Birds
Kingdom
Animalia
Phylum
chordata
Class
aves
Order
podicipediformes
Family
podicipedidae
Genus
Tachybaptus
Species
ruficollis
Species authority
(Pallas, 1764)
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
Vulnerable
Abbreviated status
VU
Qualifying criteria (if given)
D1
Criteria system used
IUCN

(see Assessment details)

Assessment rationale/justification
This species has a moderate breeding population in the UAE, which might qualify it for listing as Vulnerable (D1). However, the population is increasing within the region and throughout the Arabian Peninsula; consequently, the potential for immigration from outside the UAE remains very high. Therefore, the species has been tentatively dropped down two categories to Least Concern at the national level.
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 common resident in the UAE, occurring locally throughout the country (Pedersen et al. 2017). The species likely colonised the country only a few decades ago; the first breeding was confirmed near Kalba (Sharjah Emirate) in April 1989 (Pedersen et al. 2017). Since then, the species has been breeding successfully also in the Hatta Mountains and the Al Marmoom Conservation Reserve in Dubai Emirate (S. Alam, Dubai Municipality;pers. comm. 2019). Apart from the resident population, individuals breeding in Europe, North Africa and the Urals may pass through the country on migration or stay over the winter in the UAE, when they are locally common (Jennings 2010, 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 inhabits inland freshwater bodies and brackish coastal lakes, including shallow ponds and well-vegetated pools (Jennings 2010, Aspinall and Porter 2011). It tolerates proximity to humans and is frequently found on ornamental ponds, irrigation lakes, water reservoirs and sewage treatment plants (Jennings 2010). During winter, it also occurs on estuaries (Aspinall and Porter 2011). Its diet in Arabia is not well known, but it likely feeds on fish and invertebrates (Jennings 2010). Elsewhere, it predominantly takes adult and larval insects, as well as molluscs, crustaceans, adult and juvenile amphibians and occasionally small fish (del Hoyo et al. 1992, Konter 2001, Fjeldsa 2004). The species is partially migratory. Apart from a year-round resident population, the UAE hosts populations of passage migrants and winter visitors, which breed in central Eurasia and occur in the UAE between mid-September and October to March (Richardson 1990, Pedersen et al. 2017). The resident population may bread year-round, with peak activity between April and June (Jennings 2010). The nest is a floating platform of aquatic plant matter anchored to emergent vegetation, submerged branches or bushes close to the edge of shallow wetlands (Brown et al. 1982, del Hoyo et al. 1992, Fjeldsa 2004, Jennings 2010). Clutches contain three to five eggs, and pairs may breed up to three times per year (Jennings 2010).
Threats and conservation measures listed
Threats listed in assessment
While some of the following threats are taken from BirdLife International (2015) or are not taking place within the UAE, they are potentially relevant to individuals that visit the UAE as they may impact them outside of the country. The species is susceptible to avian influenza so may be threatened by future outbreaks of this virus (Melville and Shortridge 2006). The species suffers from the transformation of wetlands by destruction, infilling, pollution (including potential by oil) or recreational use, but this is often offset by the construction of man-made ponds, reservoirs and dams, leading to the expansion of the species in many areas (Aspinall 1996, Balmaki and Barati 2006, Llimona et al. 2014). In some areas, the species is hunted for commercial (sold as food) and recreational purposes (e.g. Iran; Balmaki and Barati 2006).
History
The species had a much smaller population in 1996 (20-200 mature individuals; Aspinal 1996), qualifying for listing as Critically Endangered, revised to Vulnerable with a two-category regional adjustment.
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