EAC 7, Shearwater, April 1967
Page 47
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Transcription
Jaegers and Skua Two Skuas were seen on the north track; one was inside the islands, and one on the outside. Pomarine Jaegers were abundant outside the Channel Islands on the south leg. Sixteen were identified, and most of the unidentified jaegers(17) were probably also Pomarines. On the north leg two unidentified Jaegers were seen outside the islands. A single Long-tailed Jaeger was identified outside the islands_ on the south leg. Gulls The status inside and outside of the islands has changed con- siderably over the past month. On the inside of the islands 129 unidentified gulls were seen, only six of which were on the north leg. During earlier surveys hundreds of gulls were seen in the same areas. Western Gulls were observed most commonly inside the Channel Islands. But when compared to other species of gulls they were proportionately more abundant on the outside. Also, in a proportionate sense, they were more abundant overall than they have been on prev- ios cruises. Both adults and immatures were noted. One Herring Gull was seen inside the islands; the remaining four were on the outside. The decrease of numbers correlates to the drop noted in the grid. California gulls were the most abundant gull seen on the non- grid survey. A group of 130 was seen just off of Catalina Island; an estimated 90% of these were immature birds. On the north leg only one California Gull was seen. One Ring-billed Gull was seen inside the islands on the north leg.