EAC 2, Shearwater, January 1967
Page 15
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Transcription
Leach's Petrel (Oceanodroma leucorhoa) Although identified only as white-rumped storm petrels, probably all the black storm petrels with white rumps were Leach's type. In addition many of the 25 birds identified only as storm petrel species were also probably Leach's. The density of the Leach's petrels increased from north to south, and probably included more than one sub-species. More collecting is needed to determine this. Two specimens were collected. Black Storm Petrel (Loomelania melania) One bird in the central portion of the grid was identified as probably being this species. Red Phalarope (Phalaropus fulicarius) This species was noted most frequently in the southern two- thirds of the grid. In addition, three birds identified only as phalarope sp. were likely of this type. Most of the sightings were of birds sitting in the water, usually near logs or sargassum. All were in winter plumage. Two specimens were collected. Pomarine Jaeger (Stercorarius pomarinus) Parasitic Jaeger (Stercorarius parasiticus) Jaeger species All sightings were of single birds in the northern two-thirds of the grid. Unlike the jaegers near Oahu, these birds did not seem to be attracted to ships. A few were noted to be chasing kittiwakes, but no other "prey" was noted. Distribution was confined to the northern two-thirds of the grid. Glaucous Gull (Larus hyperboreus) One immature bird was seen in the central portion of the grid. Glaucous-winged Gull (Larus glaucescens) Distribution and density was fairly even throughout the grid survey. All sightings were of birds following the ship, and all were immature or sub-adult birds. Two specimens were collected.