thumbnail

Osprey distribution, abundance, and status in western North America: III. The Baja California and Gulf of California population

Bulletin of the Southern California Academy of Sciences

By:
and

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time
  • Download citation as: RIS

Abstract

-An estimated 810 ? 55 pairs (minimum estimate) of ospreys (Pandion haliaetus) were nesting in the study area during our survey (24 March-l April 1977). Approximately 174 pairs nested along the Pacific side of Baja California, 255 pairs along the gulf side, 187 pairs on the Midriff Islands, and 194 pairs in coastal Sonora and Sinaloa. Most nested on cliffs adjacent to the sea (59%); some nested on cactus in flat terrain (26%). Seven per cent nested on the ground, three percent nested in mangroves and other trees in the southern portion of the study area,.and four percent nested on man-made structures. The extreme northwestern Baja California population that was extirpated early in this century has not recovered. However, several populations immediately to the south along the Pacific Coast now appear stationary. Pesticide residues in osprey eggs from Mexico were among the lowest reported for the species in North America.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Osprey distribution, abundance, and status in western North America: III. The Baja California and Gulf of California population
Series title:
Bulletin of the Southern California Academy of Sciences
Volume
78
Issue:
2
Year Published:
1979
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
89-106
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Bulletin of the Southern California Academy of Sciences
First page:
89
Last page:
106
Number of Pages:
18