Razorbill (Alca torda)

Distribution data supplied by the Ocean Biodiversity Information System (OBIS). To interrogate UK data visit the NBN Atlas.Map Help

Summary

Description

Alca torda is a rather large, heavily built auk reaching lengths of up to 43 cm with a wingspan of 69 cm. The head and upperparts are black, the underparts are white with the demarcation between the two well defined. The bill is heavy, deep and blunt tipped with diagnostic white stripes across the tip. In winter the throat and sides of the face are white. The tail is long and pointed.

Recorded distribution in Britain and Ireland

During breeding season razorbills are found on all British and Irish coasts except for east and southeast England.

Global distribution

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Habitat

The razorbill inhabits both coastal and oceanic waters of the North Atlantic. Like all auks, this is a marine species only coming ashore to breed. They nest on cliffs and among boulders, often in large colonies with other seabird species such as guillemots and kittiwakes. Outside of the breeding season razorbills disperse widely at sea, south to the Bay of Biscay and the Mediterranean Sea.

Depth range

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Identifying features

  • Up to 43 cm in length with a wingspan of 69 cm.
  • Black head (only entirely black in breeding season) and upperparts, white below.
  • Heavy, deep, blunt tipped bill with white stripe across the tip.

Additional information

The diet consists chiefly of fish including herring, sprat, cod and sandeels but may also include crustaceans and polychaetes. Please note that distribution maps are compiled using records for both breeding and wintering populations. For more specific distribution and abundance records please refer to maps compiled by The British Trust for Ornithology, available at http://www.bto.org/birdatlas/previous/index.htm

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Further information sources

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Bibliography

    Datasets

    1. Argyll Bird Club, 2017. Bird records for Argyll for the years 2002 and 2003. Occurrence dataset: https://doi.org/10.15468/uilybi accessed via GBIF.org on 2018-09-25.

    2. British Trust for Ornithology, 2018. Birds (BTO+Partners). Occurrence dataset https://www.bto.org/ accessed via NBNAtlas.org on 2018-09-25.

    3. British Trust for Ornithology, 2018. BTO First Atlas of Breeding Birds in Britain and Ireland: 1968-1972. Occurrence dataset: https://www.bto.org/ accessed via NBNAtlas.org on 2018-09-25.

    4. British Trust for Ornithology, 2018. BTO First Atlas of Wintering Birds in Britain and Ireland: 1981/82-1983/84. Occurrence dataset: https://www.bto.org/ accessed via NBNAtlas.org on 2018-09-25.

    5. British Trust for Ornithology, 2018. BTO First Atlas of Wintering Birds in Britain and Ireland: 1981/82-1983/84. Occurrence dataset: https://www.bto.org/ accessed via NBNAtlas.org on 2018-09-25.

    6. Cofnod – North Wales Environmental Information Service, 2018. Miscellaneous records held on the Cofnod database. Occurrence dataset: https://doi.org/10.15468/hcgqsi accessed via GBIF.org on 2018-09-25.

    7. Cumbria Biodiversity Data Centre, 2018. Tullie House Museum Natural History Collections. Occurrence dataset: https://doi.org/10.15468/epewfs accessed via GBIF.org on 2018-09-25.

    8. Environmental Records Information Centre North East, 2018. ERIC NE Combined dataset to 2017. Occurrence dataset: http://www.ericnortheast.org.ukl accessed via NBNAtlas.org on 2018-09-38

    9. Fife Nature Records Centre, 2018. Fife Nature Records Centre combined dataset. Occurrence dataset: https://doi.org/10.15468/ccc1ip accessed via GBIF.org on 2018-09-27.

    10. Fife Nature Records Centre, 2018. St Andrews BioBlitz 2014. Occurrence dataset: https://doi.org/10.15468/erweal accessed via GBIF.org on 2018-09-27.

    11. Fife Nature Records Centre, 2018. St Andrews BioBlitz 2015. Occurrence dataset: https://doi.org/10.15468/xtrbvy accessed via GBIF.org on 2018-09-27.

    12. Isle of Wight Local Records Centre, 2017. Isle of Wight Notable Species. Occurrence dataset: https://doi.org/10.15468/sm4ety accessed via GBIF.org on 2018-09-27.

    13. John Muir Trust, 2017. Species Records for John Muir Trust Properties 2007-2009. Occurrence dataset: https://doi.org/10.15468/p5lw5z accessed via GBIF.org on 2018-09-27.

    14. Manx Biological Recording Partnership, 2017. Isle of Man wildlife records from 01/01/2000 to 13/02/2017. Occurrence dataset: https://doi.org/10.15468/mopwow accessed via GBIF.org on 2018-10-01.

    15. Manx Biological Recording Partnership, 2018. Isle of Man historical wildlife records 1995 to 1999. Occurrence dataset: https://doi.org/10.15468/lo2tge accessed via GBIF.org on 2018-10-01.

    16. Merseyside BioBank., 2017. Merseyside BioBank (verified). Occurrence dataset: https://doi.org/10.15468/ar0p6s accessed via GBIF.org on 2018-10-01.

    17. National Trust, 2017. National Trust Species Records. Occurrence dataset: https://doi.org/10.15468/opc6g1 accessed via GBIF.org on 2018-10-01.

    18. NBN (National Biodiversity Network) Atlas. Available from: https://www.nbnatlas.org.

    19. Norfolk Biodiversity Information Service, 2017. NBIS Records to December 2016. Occurrence dataset: https://doi.org/10.15468/jca5lo accessed via GBIF.org on 2018-10-01.

    20. North East Scotland Biological Records Centre, 2018. North East Scotland Birds (1883-2010). Occurrence dataset: https://doi.org/10.15468/o1okcz accessed via GBIF.org on 2018-10-01

    21. OBIS (Ocean Biodiversity Information System),  2024. Global map of species distribution using gridded data. Available from: Ocean Biogeographic Information System. www.iobis.org. Accessed: 2024-11-21

    22. Record, 2017. RECORD Aves Data. Occurrence dataset: https://doi.org/10.15468/pudf3y accessed via GBIF.org on 2018-10-01.

    23. South East Wales Biodiversity Records Centre, 2018. SEWBReC Birds (South East Wales). Occurrence dataset: https://doi.org/10.15468/qfainq accessed via GBIF.org on 2018-10-02.

    24. South East Wales Biodiversity Records Centre, 2018. Dr Mary Gillham Archive Project. Occurance dataset: http://www.sewbrec.org.uk/ accessed via NBNAtlas.org on 2018-10-02

    25. Suffolk Biodiversity Information Service., 2017. Suffolk Biodiversity Information Service (SBIS) Dataset. Occurrence dataset: https://doi.org/10.15468/ab4vwo accessed via GBIF.org on 2018-10-02.

    26. The Wildlife Information Centre, 2017. Biological Recording in Scotland - Scotsman Wildlife Surveys. Occurrence dataset: https://doi.org/10.15468/t50yhv accessed via GBIF.org on 2018-10-02.

    27. West Wales Biodiversity Information Centre, 2017. WTSWW Data: All Taxa (West Wales). Occurrence dataset: https://doi.org/10.15468/gaakk2 accessed via GBIF.org on 2018-10-02.

    28. Yorkshire Wildlife Trust, 2018. Yorkshire Wildlife Trust - Non-sensitive records from all taxonomic groups. Occurrence dataset: https://doi.org/10.15468/2razk5 accessed via GBIF.org on 2018-10-02.

    Citation

    This review can be cited as:

    Sweet, N. A. 2008. Alca torda Razorbill. In Tyler-Walters H. and Hiscock K. Marine Life Information Network: Biology and Sensitivity Key Information Reviews, [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 21-11-2024]. Available from: https://marlin.ac.uk/species/detail/2205

    Last Updated: 24/09/2008