Canary Islands Black Oystercatcher, Haematopus meadewaldoi.Formally considered a subspecies of African Oystercatcher H. moquini which in turn has also been considered a subspecies of Eurasian Oystercatcher H. ostralegus. Split from African Oystercatcher by Hockey (1982).
History: By the mid nineteenth century it was already considered 'not frequent'. The last definite record was this specimen shown here which was shot in 1913 although locals thought the species hung on until around 1940. There have been further unsubstantiated sightings on Tenerife.
|Specimen number 19220.127.116.11. Collected on Graciosa Island 03/06/1913:|
Left lateral view.
More intriguingly there is a record of three black oystercatchers seen on the Senegal coast in 1970 and 1975 although it is not known which species was involved. This could have referred to Canary Island Oystercatchers that moved to the mainland as had earlier been suggested or they may have been African Oystercatchers. The problem with the latter species is that it has not otherwise been recorded north of Angola. Another possibility is that they were simply melanistic Eurasian Oystercatchers.
|Specimen number 1918.104.22.168: dorsal view.|
|Specimen number 1922.214.171.124: ventral view.|
Probably became extinct as a result of habitat loss due to human activity.
Probable major cause was invertebrate collection on rocky shores which will have disturbed them both during breeding and feeding. Eggs and birds known to have been taken for food. Cats and rats also suspected to have hastened decline.
|Specimen number 19126.96.36.199: upper left 45° angle view|
del Hoyo, J., Elliott, A. & Sargatal. J. eds (1996) Handbook of the birds of the world. Vol. 3. Hoatzin to Auks. Lynx Edicions, Barcelona.
Birdlife International (2013) Species factsheet: Haematopus meadewaldoi.
http://www.birdlife.org/datazone/speciesfactsheet.php?id=3089 Downloaded from http://birdlife.org on 14/02/2013.
Wikipedia 14/02/2013: http://en.wikipedia.org/wiki/Canarian_Oystercatcher