Taxon name
Haematopus ostralegus
Linnaeus, 1758
Uploaded by
National Red List Database
Taxonomic information
Scientific name
Haematopus ostralegus
Linnaeus, 1758
Assessed taxon level
Species
Higher level taxonomic groupings
Vertebrates
Birds
Species authority
Linnaeus, 1758
Taxonomic notes and synonyms listed
Haematopus ostralegus;and;H. finschi;were previously lumped as;H. ostralegus;(del Hoyo and Collar 2014), but have once more been recognised as species following a review of additional material allowing the scoring of the taxa against each other and;H. longirostris,;H. chathamensis, and;H. unicolor;(G. Ehmke;in litt.;2015, Hayman;et al.;1986, Marchant and Higgins 1993). This restores the taxonomic position of the two species prior to del Hoyo and Collar (2014).
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)
Does the assessment cover a marine EEZ area(s)?
Not_assigned
Conservation Status
Assessed as
Least Concern
Criteria system used
IUCN
(see Assessment details)
Assessment rationale/justification
The size of the population overwintering in the UAE is moderate and considered stable, and likely receives some rescue effect. Therefore, the species is assessed as Least Concern.
Assessment details
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 locally common along the coast during migration and winter (Richardson 1990, Pedersen et al. 2017). Some individuals stay in the UAE over summer (Pedersen et al. 2017). The highest numbers are recorded between August and March (Richardson 1990).
Is there a map available in assessment?
Yes
Habitat and systems
Ecological system type
Habitat
Habitat details as listed in assessment
This species is mainly coastal; it inhabits beaches, tidal creeks and lagoons, but is also found along lakes and rivers further inland (Richardson 1990, Aspinall and Porter 2011). There is no information available about its diet in the UAE; elsewhere, when foraging on soft intertidal substrates, bivalves and gastropods are the most important food items for this species, and when inland, prey such as earthworms and insect larvae are also taken (del Hoyo et al. 1996). The species is migratory. Individuals wintering in the UAE breed between April and July mostly in central Asia.
Threats and conservation measures listed
Threats listed in assessment
Within the UAE, the most pressing threats to this species are likely to come from coastal land-use changes and potentially from oil pollution, but the severity of these threats to the species are uncertain.The species's global decline is driven by a very large range of threats, which may be important to highlight as they could be having an impact on the individuals when they are outside of the UAE - although, overall, the subspecies longipes, which is occurring in the UAE, is not thought to be in decline (Wetlands International 2019). Such threats include over-fishing of its prey (Atkinson;et al.;2003, Verhulst;et al.;2004, Ens 2006, van de Pol;et al. 2014), human disturbance (Kelin and Qiang 2006) (e.g. from construction work or recreational activities [Burton et al. 2002, van de Pol et al. 2014]), coastal barrage construction (Burton 2006), industrial development including development of ports and oil extraction, oil spills, wind farms (Melville et al. 2014) and reduced river flows (Kelin and Qiang 2006). Intensive agriculture including frequent mowing of grasslands and high densities of grazing livestock threatens chicks, eggs and nests and high levels of fertilizers and pesticides can reduce soil invertebrate biomass (van de Pol;et al. 2014). A reduction in eutrophication is likely to have contributed to declines in some areas, owing to a loss of food resources (van de Pol et al. 2014, H. Meltofte in litt. 2015).;The species is hunted in some range states (both legally and illegally) but the effects of hunting at the population level are not known (Melville et al. 2014, Sarychev and Mischenko 2014, van de Pol et al. 2014). The invasive Pacific Oyster Crassostrea gigas has become abundant in the Oosterschelde (Netherlands) and is increasing in the Dutch Wadden Sea (van de Pol et al. 2014). Eurasian Oystercatcher generally does not eat this species of oyster which is reported to be invading mussel beds and may compete with cockles and mussels thus reducing food availability. However Pacific Oyster beds could also provide an area for mussel beds to re-establish. In the northern part of the breeding range of the longipes subspecies, cessation of grazing in coastal areas leading to development of shrubby vegetation threatens breeding habitats (Sarychev and Mischenko 2014). Conversely, intensive grazing in some areas may pose a threat to this population. The species is susceptible to avian influenza so may be threatened by future outbreaks of the virus (Melville and Shortridge 2006).Sea level rise leading to increased coastal erosion and flooding is contributing to habitat loss in some areas (Melville;et al. 2014, van de Pol;et al. 2014). Climate change has advanced the average egg-laying date of the species and is likely to reduce recruitment of bivalves, however warmer winters are expected to benefit the species leading to lower winter mortality (van de Pol;et al. 2014). Droughts in some inland areas are likely to lead to a loss of suitable habitat (Melville;et al. 2014, Sarychev and Mischenko 2014).
History
The species is also considered to have been Least Concern in 1996.
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