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Oceanodroma hornbyi

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AVES PROCELLARIIFORMES HYDROBATIDAE

Scientific Name: Oceanodroma hornbyi
Species Authority: (G. R. Gray, 1864)
Common Name/s:
English Hornby's Storm Petrel, Ringed Storm-petrel, Ringed Storm-Petrel

Assessment Information [top]

Red List Category & Criteria: Data Deficient     ver 3.1
Year Published: 2010
Assessor/s: BirdLife International
Reviewer/s: Calvert, R., Butchart, S., Bird, J.
History:
2008 Data Deficient
2004 Data Deficient
2000 Data Deficient
1996 Data Deficient
1994 Data Deficient

Geographic Range [top]

Range Description: Oceanodroma hornbyi has been observed in thousands in the eastern Pacific Ocean, along the coast of Peru and Chile2. Data on overall numbers and trends are lacking, and the breeding grounds have never been found1,2,3. At-sea distribution and observations of grounded birds indicate that it nests between 20° and 25°S in Chile and perhaps north into Peru1. Birds may breed on offshore islands or mainland cliffs, but the coast of north Chile is distinctly bereft of islands and the cliffs are largely devoid of deep rocky crevices or soil in which petrels might burrow1. It is most likely to nest in the Atacama Desert, and there are reports of mummified adults and fledglings found up to 50 km inland and 1,500 m above sea level4.

Countries:
Native:
Chile; Peru
Vagrant:
Colombia; United States
Present - origin uncertain:
Ecuador
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Brooke (2004) estimated the global population to number at least thousands of individuals (possibly up to tens of thousands of individuals).

Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: It may breed on offshore islands or mainland cliffs, but is most likely to nest inland in the arid Atacama Desert.

Systems: Terrestrial; Marine

Threats [top]

Major Threat(s): Until the breeding grounds are found, the extent to which it is threatened by mining-related activity will remain unknown1.

Conservation Actions [top]

Conservation Actions: Conservation Actions Underway
None is known.

Conservation Actions Proposed
Search for breeding colonies on offshore islands, coastal cliffs and the arid hinterland of the Antofagasta region in March-July, looking for burrows and signs of nesting, listening for night-time flight calls and following up reports of dead or grounded fledglings inland4.

Bibliography [top]

Brooke, M. De L. 1999. A search for the nesting colonies of Hornby's Storm Petrel in the Atacama desert; April/May 1999.

Brooke, M. De L. 2000. A search for the nesting colonies of Markham's and Hornby's Storm-petrel in the Atacama Desert.

Carboneras, C. 1992. Hydrobatidae (Storm-Petrels). In: del Hoyo, J.; Elliott, A.; Sargatal, J. (ed.), Handbook of the birds of the world, pp. 258-271. Lynx Edicions, Barcelona, Spain.

Tobias, J. A.; Butchart, S. H. M.; Collar, N. J. 2006. Lost and found: a gap analysis for the Neotropical avifauna. Neotropical Birding: 4-22.

Citation: BirdLife International 2010. Oceanodroma hornbyi. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 22 May 2012.
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