282 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



clear of the land, flocks of Shearwaters, hurrying down the 

 coast, were dimly discernible through the fog. Before the 

 buoy was reached it was manifest that there was an exten- 

 sive movement in progress near the shore. At the outset 

 Dark-bodied Shearwaters were well represented, but in a 

 little while only the Black-vented appeared in force. After 

 passing Point Pinos, instead of altering their course and 

 heading south, all the Shearwaters proceeded directly out 

 to sea. The fog was so thick that the outlying rocks at the 

 Point could scarcely be perceived at the kelp. The coast- 

 line to the southward was invisible, and the ocean seemingly 

 boundless space, where the birds apparently lost their bear- 

 ings and became bewildered, for a return movement set 

 into the bay when the fog was densest. At the same time 

 others continued to arrive from up the coast; the outward 

 bound ones passing close to the Point and the inward bound 

 in the vicinity of the buoy. After a while many flew about 

 at random and a large flock congregated on the water. 

 When the shore-line became visible the birds on the water 

 resumed their journey southward. No rush took place 

 after the fog raised, the flight having spent its strength. 

 One small company of the Black-vented remained behind, 

 joining a party of Western Gulls following a school of sar- 

 dines. Twenty-five Pink-footed Shearwaters were counted 

 in the neighborhood of the buoy during the forenoon. Two 

 of them accompanied the foragers in pursuit of the sar- 

 dines. The others were moving down the coast, straggling 

 along singly, apparently unmindful of their congeners. 



After the low fog several southbound bands of Heer- 

 mann's Gulls were seen as they were pursuing their way 

 along the shore, close to the surface of the water. Other 

 birds whose presence had especial bearing upon migration 

 were two Loons, a solitary Murre, a juvenile Short-tailed 

 Albatross, about a dozen Pomarine Jaegers, and a few 

 Northern Phalaropes. 



September 28. There was further passage of Black- 

 vented Shearwaters. They came from above in small com- 

 panies, and proceeded directly down the coast. Of the 



