Calidris falcinellus | UAE National Red List of Birds

Taxa
Calidris falcinellus | (Pontoppidan, 1763)
Location
Countries in Assessment
United Arab Emirates
Country ISO code(s)
ARE
Does the assessment cover a marine EEZ area(s)?
Off
Scope (Assessment)
National
Taxon
Taxonomic Group
Vertebrates
Taxonomic Group Level 2
Birds
Assessed taxon level
Species
Taxonomic Notes
Calidris falcinellus (del Hoyo and Collar 2014) was previously placed in the genus Limicola.
Taxon distribution as listed in assessment
This species is uncommon along the coast of the UAE (Pedersen et al. 2017). The majority of occurrences are likely to be of wintering birds and migrant individuals on passage to and from the breeding grounds (Pedersen et al. 2017). The most important wintering site is at Ras Al Khor Wildlife Sanctuary (J.N. Shah, NRCS,;pers comm. 2019). Numbers peak between July and October and are lowest in May and June (Richardson 1990, Pedersen et al. 2017).
Habitats and Ecology
Ecological system type
Terrestrial system
No
Freshwater system
No
Marine system
No
Habitat
Habitat details as listed in assessment
This species occurs mainly in coastal mudflats and tidal pools, but also in shallow fresh and brackish water and in wetlands further inland (Richardson 1990, del Hoyo et al. 1996, Aspinall and Porter 2011). There is no information available about its diet in the UAE; elsewhere it is omnivorous and feeds mainly on marine nereid worms, small bivalves and snails, crustaceans, insects, as well as the seeds of aquatic plants (del Hoyo et al. 1996, Snow and Perrins 1998). The species is migratory. Birds wintering in the UAE breed in June in wet lowlands of subarctic Scandinavia (Richardson 1990, del Hoyo et al. 1996). Individuals leave the breeding grounds by July, and stop-over in substantial numbers in Sivash (southern Ukraine) and on the Caspian Sea or the Bulgarian seaboard, before arriving in wintering grounds in late July and August (Richardson 1990, del Hoyo et al. 1996). The species migrates singly or in small groups, although during the spring migration flocks of up to several hundred can occur (del Hoyo et al. 1996). The population departs the wintering grounds in spring in April or May (Richardson 1990, del Hoyo et al. 1996).A few non-breeding birds remain at the wintering sites during the summer (del Hoyo et al. 1996, Pedersen et al. 2017).
Is there a map available in assessment?
Yes
Assessed status
Asessment status in full
Endangered
Assessment status abreviation
EN
Assessment status criteria
A2a; C1+2a(i,ii)
Assessment rationale/justification
This species has a very small non-breeding population in the UAE, which is undergoing a rapid decline. Moreover, wetland habitats within the UAE are likely to be deteriorating due to land conversion. Therefore, the species could warrant listing as Critically Endangered at the national level. However, given the large and stable global populations, we downlist this assessment to Endangered for the UAE.
About the assessment
Assessment year
2019
Assessors/contributors/reviewers listed
UAE National Red List Workshop
Affliation of assessor(s)/contributors/reviewers listed on assessment
Government
IGO
Assessor affiliation specific
Government|IGO
Criteria system
Criteria system specifics
IUCN v3.1 + Regional Guidelines v4.0
Criteria system used
IUCN
Criteria Citation
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.
Endemism
Endemic to region
Not_assigned
Endemism Notes
Is an endemic?: Not_assigned
Conservation
Threats listed in assessment
Changes in coastal land-use and the possibility of oil pollution could affect this species in UAE, but the severity of these threats towards this species is unknown. It is uncertain the extent to which factors affecting breeding populations (e.g. see BirdLife International 2015) could impact individuals that do pass-through/over-winter in UAE. Climate change is likely to have an effect on this species in the future, including sea level rise.
Conservation Measures

Conservation measures:
Conservation measures notes:
Required conservation measures:

Further information
History
The population would have been at significantly larger in 1996, with counts of; > 500 individuals at Ras Al Khor in the 1990s, and the overall population would have been in excess of 1,000 individuals. Significant declines in habitat area and quality did not commence until after 1996, and the species is assessed as Least Concern in 1996.
Scientific Name Kingdom Phylum Class Order Family Genus
Calidris falcinellus Animalia Chordata Aves Charadriiformes Scolopacidae Calidris