SUNRISE CLIFFS: MAMMOTH CREST. WHERE TWO SETS OF 

 LEUCCS' EGGS WERE TAKEN WITH ONE CAST OF THE ROPE 



the early prospects. We learned that the feeding visits of a male to his mate 

 on the nest were exceedingly infrequent. The females themselves, apparently, 

 indulged two feeding periods, — one about eight or nine o'clock in the morning, 

 and the other after sunset. In most instances, whether by male or female, the 

 approach to the nest was made by leisurely stages. Significant actions were 

 lost in the maze of casual appearances, or under a camouflage of indifference. 

 At last, however, on the evening of the 23rd, spying chillily from our snow-and- 

 rock bound ledge, we had the satisfaction of seeing the male bird visit the original 

 location site, where he fed and departed. The next morning we caught the 

 unattended female, she of the shattered niche, flying straight to her domicile, 

 and disappearing. As luck would have it, we were standing at the time on the 

 snowfield immediately below, and saw precisely which one of the twenty odd 

 crevices she entered. It was time for action. 



The writer elected, for reasons which need not be dwelt upon, to direct 

 operations from below, while two of the party, my son, William Oberlin, and our 

 field assistant, Robert Canterbury, equipped with ropes and pikes, made the 

 lengthy detour and approached from above. The cliff was full live hundred 



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