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New information on the distribution of three species of Southern Ocean gadfly petrels (Pterodroma spp.)

  • Publication Type

    Journal Article

  • Publication Year

    1996

  • Author(s)

    S.N.G. Howell; D.G. Ainley; S. Webb; D.B. Hardesty; L.B. Spear

  • Journal Name

    Notornis

  • Volume, Issue

    43, 2

  • Pagination

    71-78

  • Article Type

    Paper

  • DOI

    https://doi.org/10.63172/913918owxocn

Keywords

distribution; P. brevirostris; P. magentae; Pterodroma lessonii; South Pacific


New information on the distribution of three species of Southern Ocean gadfly petrels (Pterodroma spp.)

Notornis, 43 (2), 71-78

S.N.G. Howell; D.G. Ainley; S. Webb; D.B. Hardesty; L.B. Spear (1996)

Article Type: Paper

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We present new distributional data from the eastern South Pacific Ocean for the white-headed petrel (Pterodroma lessonii), Kerguelen petrel (P. brevirostris), and birds showing characters of the endangered Magenta petrel (P. magentae). Extrapolation of density for white-headed petrels suggests a pelagic population of 18,770 birds for the 10° x 5° block of subtropical surface waters between 27-37°S and 80-85°W (August 1995). Two Kerguelen petrels were noted off Chile at around 40°30’S 74°50’W (August 1995). Three sightings of apparent Magenta petrels between 28°44’S 72°40’W (March 1992) and 36°24’S 78°02’W (August 1995) are reported to alert observers to the potential occurrence of this species off South America.