Habitat utilization and breeding success in Leach's Storm-Petrel: the importance of sociality

2000 ◽  
Vol 78 (7) ◽  
pp. 1267-1274 ◽  
Author(s):  
Ian J Stenhouse ◽  
William A Montevecchi
Keyword(s):  
Breeding Success ◽  
Ideal Free Distribution ◽  
Habitat Utilization ◽  
Breeding Habitat ◽  
Oceanodroma Leucorhoa ◽  
Open Habitat ◽  
The North ◽  
Animal Populations ◽  
Leach’S Storm Petrel ◽  
Storm Petrel

Models like "ideal-free distribution" that have been developed to predict the spatial distribution of animal populations typically assume that high densities will occur in preferred habitats. We investigated habitat utilization in Leach's Storm-Petrels (Oceanodroma leucorhoa) at the centre of the species' breeding range in the North Atlantic by comparing microhabitat features and breeding success in forest and open meadows on Great Island, Newfoundland. Leach's Storm-Petrels utilized forest more than open habitat. Overall, forest provided consistently better breeding habitat, with burrow density and activity and occupancy rates higher than in open habitat. A strong positive relationship between occupancy and both hatching and breeding success suggests that sociality plays an important role in habitat utilization and reproduction in Leach's Storm-Petrel.

Seabird Geographic Variation: Similarity Among Populations of Leach's Storm-Petrel

The Auk ◽  
1986 ◽  
Vol 103 (3) ◽  
pp. 575-585 ◽  
Author(s):  
Dennis M. Power ◽  
David G. Ainley
Keyword(s):  
Geographic Variation ◽  
Atlantic Coast ◽  
Geographic Distance ◽  
Oceanodroma Leucorhoa ◽  
North American Continent ◽  
The North ◽  
Canonical Variates ◽  
Leach’S Storm Petrel ◽  
Guadalupe Island ◽  
Storm Petrel

Abstract We assessed geographic variation in 13 locality samples of Leach's Storm-Petrel (Oceanodroma leucorhoa), 12 from the Pacific coast and 1 from the Atlantic coast of North America. Nine phenetic characters were used with canonical variates analysis to determine similarity among samples. Regression of phenetic distance on geographic distance measured the relation between similarity and interisland distance. We found a clinal pattern of population similarity from the Aleutian Islands in the north to the Farallon Islands in the south. Populations from Los Coronados and San Benitos islands make up a distinct subset when rump color and wing and tail shape indices are included in the analysis, but these populations were part of a dominant clinal trend when only five size characters were used. On Guadalupe Island separate populations breed in summer and winter; these are strongly differentiated from the others and from each other. The North Atlantic sample was aligned closely with that from the Aleutians. The degree of geographic variation was roughly similar to that in certain migratory land birds on the North American continent, but is less than what is found for certain nonmigratory land birds on islands. Our results suggest recognizing four subspecies of Leach's Storm-Petrel in the study area, including two on Guadalupe Island isolated by time of breeding.

Leach's Storm-Petrel (Oceanodroma leucorhoa)

2020 ◽  
Author(s):  
Ingrid L. Pollet ◽  
Alexander L. Bond ◽  
April Hedd ◽  
Charles E. Huntington ◽  
Ronald G. Butler ◽  
...  
Keyword(s):  
Oceanodroma Leucorhoa ◽  
Leach’S Storm Petrel ◽  
Storm Petrel

Leach's Storm-Petrel (Oceanodroma leucorhoa)

1996 ◽  
Author(s):  
Charles E. Huntington ◽  
Ronald G. Butler ◽  
Robert Mauck
Keyword(s):  
Oceanodroma Leucorhoa ◽  
Leach’S Storm Petrel ◽  
Storm Petrel

First recorded breeding of Leach's Storm Petrel Oceanodroma leucorhoa in the Southern Hemisphere, at Dyer Island, South Africa

Ibis ◽  
2008 ◽  
Vol 141 (2) ◽  
pp. 327-330 ◽  
Author(s):  
Philip A. Whittington ◽  
Bruce M. Dyer ◽  
Robert J.M. Crawford ◽  
Anthony J. Williams
Keyword(s):  
South Africa ◽  
Southern Hemisphere ◽  
Oceanodroma Leucorhoa ◽  
Leach’S Storm Petrel ◽  
Storm Petrel

Diets and distributions of Leach’s storm-petrel (Oceanodroma leucorhoa) before and after an ecosystem shift in the Northwest Atlantic

2009 ◽  
Vol 87 (9) ◽  
pp. 787-801 ◽  
Author(s):  
A. Hedd ◽  
W. A. Montevecchi ◽  
G. K. Davoren ◽  
D. A. Fifield
Keyword(s):  
Trophic Levels ◽  
Oceanodroma Leucorhoa ◽  
Nestling Diet ◽  
Before And After ◽  
Ecosystem Shift ◽  
Capelin Mallotus Villosus ◽  
Leach’S Storm Petrel ◽  
Winter Diets ◽  
General Diet ◽  
Storm Petrel

The Grand Bank ecosystem has undergone significant shifts during the past two decades owing to oceanographic and fishing effects. Effects on upper trophic level seabirds (dietary shifts, reduced reproductive performance) have been mediated through changes in the biology and behaviour of capelin ( Mallotus villosus (Müller, 1776)), the focal forage species. To explore for effects at lower trophic levels, we combine dietary (1987–1988, 2003–2006) and distributional (1966–1990, 1998–1999) data for Leach’s storm-petrel ( Oceanodroma leucorhoa (Vieillot, 1818)), a small, abundant, and highly pelagic seabird. Fish and crustaceans formed the bulk of nestling diet at two colonies, with fish dominating in all sampling periods and years (occurrence >70%, reconstructed mass >75%). Five families were represented, but mature myctophids (glacier lanternfish ( Benthosema glaciale (Reinhardt, 1837)), horned lanternfish ( Ceratoscopelus maderensis (Lowe, 1839)), Protomyctophum arcticum (Lütken, 1892)) and sandlance (genus Ammodytes L., 1758) dominated. Crustaceans occurred frequently but typically comprised ≤10% by mass; Hyperia galba (Montagu, 1813) dominated this prey class. General diet composition was similar through time with birds relying heavily on myctophid fishes in 1987–1988 and 2003–2006. Crustacean diversity, however, declined with fewer species of hyperiid amphipods and no small euphausiids (genus Thysanoessa Brandt, 1851) consumed in 2003–2006. The latter parallels changes in spring diets of capelin and winter diets of murres (genus Uria Brisson, 1760) in the region. Associations of storm-petrels with deep water are consistent with the predominance of mesopelagic prey in their diets.

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