Short NoteLumbering the gauntlet: Cape Gannet fledglings killed by African Penguins
This account presents the first known observations of Cape Gannet Morus capensis fledgling mortalities as a result of aggressive nest defence behaviour by African Penguins Spheniscus demersus. Observations were conducted in 2013 on Bird Island, Algoa Bay, South Africa – the world’s largest breeding...
Main Authors: | , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
NISC Pty Ltd
2014
|
Subjects: | |
Online Access: | http://www.ajol.info/index.php/ostrich/article/view/109373 |
id |
ftjafricanj:oai:ojs.ajol.info:article/109373 |
---|---|
record_format |
openpolar |
spelling |
ftjafricanj:oai:ojs.ajol.info:article/109373 2023-05-15T15:44:41+02:00 Short NoteLumbering the gauntlet: Cape Gannet fledglings killed by African Penguins McInnes, Alistair M Suarez, Nicolas Rishworth, Gavin M Green, David B Pistorius, Pierre A Pichegru, Lorien 2014-11-03 application/pdf http://www.ajol.info/index.php/ostrich/article/view/109373 eng eng NISC Pty Ltd http://www.ajol.info/index.php/ostrich/article/view/109373/99155 http://www.ajol.info/index.php/ostrich/article/view/109373 Copyright for articles published in this journal is retained by the journal. Ostrich: Journal of African Ornithology; Vol 85, No 2 (2014) 0030-6525 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2014 ftjafricanj 2015-03-08T00:48:39Z This account presents the first known observations of Cape Gannet Morus capensis fledgling mortalities as a result of aggressive nest defence behaviour by African Penguins Spheniscus demersus. Observations were conducted in 2013 on Bird Island, Algoa Bay, South Africa – the world’s largest breeding colony of Cape Gannets. Twentyeight attacks were witnessed between 21 March and 18 May 2013 of which 16 resulted in mortality. The absence of previous observations of this phenomenon may be due to an unusually high proportion of African Penguin chicks being present relatively early on in the breeding season, associated with a potential for increased nest defence at this stage, and a larger number of gannet fledglings that year compared to previous years over the same period.Keywords: interspecific aggression, nest defence behaviour, seabirdsOSTRICH 2014, 85(2): 193–196 Article in Journal/Newspaper Bird Island AJOL - African Journals Online Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) |
institution |
Open Polar |
collection |
AJOL - African Journals Online |
op_collection_id |
ftjafricanj |
language |
English |
description |
This account presents the first known observations of Cape Gannet Morus capensis fledgling mortalities as a result of aggressive nest defence behaviour by African Penguins Spheniscus demersus. Observations were conducted in 2013 on Bird Island, Algoa Bay, South Africa – the world’s largest breeding colony of Cape Gannets. Twentyeight attacks were witnessed between 21 March and 18 May 2013 of which 16 resulted in mortality. The absence of previous observations of this phenomenon may be due to an unusually high proportion of African Penguin chicks being present relatively early on in the breeding season, associated with a potential for increased nest defence at this stage, and a larger number of gannet fledglings that year compared to previous years over the same period.Keywords: interspecific aggression, nest defence behaviour, seabirdsOSTRICH 2014, 85(2): 193–196 |
format |
Article in Journal/Newspaper |
author |
McInnes, Alistair M Suarez, Nicolas Rishworth, Gavin M Green, David B Pistorius, Pierre A Pichegru, Lorien |
spellingShingle |
McInnes, Alistair M Suarez, Nicolas Rishworth, Gavin M Green, David B Pistorius, Pierre A Pichegru, Lorien Short NoteLumbering the gauntlet: Cape Gannet fledglings killed by African Penguins |
author_facet |
McInnes, Alistair M Suarez, Nicolas Rishworth, Gavin M Green, David B Pistorius, Pierre A Pichegru, Lorien |
author_sort |
McInnes, Alistair M |
title |
Short NoteLumbering the gauntlet: Cape Gannet fledglings killed by African Penguins |
title_short |
Short NoteLumbering the gauntlet: Cape Gannet fledglings killed by African Penguins |
title_full |
Short NoteLumbering the gauntlet: Cape Gannet fledglings killed by African Penguins |
title_fullStr |
Short NoteLumbering the gauntlet: Cape Gannet fledglings killed by African Penguins |
title_full_unstemmed |
Short NoteLumbering the gauntlet: Cape Gannet fledglings killed by African Penguins |
title_sort |
short notelumbering the gauntlet: cape gannet fledglings killed by african penguins |
publisher |
NISC Pty Ltd |
publishDate |
2014 |
url |
http://www.ajol.info/index.php/ostrich/article/view/109373 |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) |
geographic |
Bird Island |
geographic_facet |
Bird Island |
genre |
Bird Island |
genre_facet |
Bird Island |
op_source |
Ostrich: Journal of African Ornithology; Vol 85, No 2 (2014) 0030-6525 |
op_relation |
http://www.ajol.info/index.php/ostrich/article/view/109373/99155 http://www.ajol.info/index.php/ostrich/article/view/109373 |
op_rights |
Copyright for articles published in this journal is retained by the journal. |
_version_ |
1766379062519922688 |