EAC 14, Jordan, June-August 1967
Page 15
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Transcription
PHAETHONTIDAE Red-billed Tropicbird (Phaethon aetheraeus): 9. All but one were observed within ca. 250 miles of the coast. The exception was also the farthest south and was recorded at 10°05'N by 097°33'W. Red-tailed Tropicbird (Phaethon rubricauda): 16. In contrast to the above species all sightings, with one exception, were over 250 miles from the coast. Apparently this species is most abundant in, or just north of, the Countercurrent. One bird, however, was recorded at 03°S by 115°W. White-tailed Tropicbird (Phaethon lepturus): 1. One individual was recorded in the countercurrent at ca. 10°N by 104.6°W. SULIDAE Blue-faced Booby (Sula dactylatra): 31. All but five were within 500 miles of the coast of southern Mexico, and three of these were within 300 miles of Clipperton Island. The species was found south to 04°16'N and west to 109°W. The most pelagic of the individuals recorded were all first-year birds. Brown Booby (Sula leucogaster): 761. Strictly a coastal species found from 20°N south at least to Acapulco, Mexico. Red-footed Booby (Sula sula): 43. Restricted to eastern areas (east of 105°W). One light-phase adult was recorded at 18°05'N by 105°W, and ;one sub-adult light-phase at 09°30'N by 097°33'W. The rest were all first year birds. Blue-footed Booby (Sula nebouxii): 2?. Several birds were seen in the coastal waters off Manzanillo, Colima, Mexico which may have been this species. PHALACROCORACIDAE Eighteen cormorants were observed in the waters around Cedros Island, Baja California. All appeared to be Brandt Cormorant (Phalacrocorax penicillatus) although none were observed close enough for positive identification. FREGATIDAE Magnificent Frigatebird (Fregata magnificens): 7. All recorded along the coast from 16° to 25°N. Great Frigatebird (Fregata minor): 3. Although only three individuals were identified, 24 others were recorded within the Countercurrent area, with maximum density along Longitude 097.5°W. All of these probably belonged to this species.