16 PROCEEDINGS OF THE 



few minutes and then alighted on the dead stub near the cliff. 

 We could hear them calling in almost caressing tones to each 

 other, and their notes were almost soft, sounding something 

 like a bell-like "coo-coo." Temperature 12°. 



March 1, 1910. Foster White and I started out early this 

 morning for the Ravens' nest. The day was springlike and the 

 snow was melting. When we were about a hundred yards from 

 the cliff the Raven darted off the nest and disappeared. The 

 nest held a set of five eggs, which we collected and found to be 

 perfectly fresh. Both Ravens soared over us high up in the air, 

 calling several times, and then flew off and perched side by side 

 on the dead stub on the far side of the gap. 



March 12, 1910. Visited the cliff again. The birds were 

 flying about the locality, but when I climbed to the nest I found 

 it empty and the lining partly torn out. The birds seem 

 very solicitous, however, and I almost believe they are building 

 again in the vicinity. 



March 13, 1910. This afternoon I started out for the gap to 

 look for the second Ravens' nest, which was evidently some- 

 where among the rocks. When I came up the gap the male 

 was perched on the stub just in front of the old nest, and soon 

 seeing me he uttered a rolling " crrruck," evidently of warning, 

 and flew off, followed by the female, which came from the 

 vicinity of the former nest. On reaching the old nest I noticed 

 that a new one had been built farther back on the same jutting 

 rock. The nests were not more than two feet apart. The new 

 one was built very firmly in among the shelving rocks, and was 

 lined with sheeps' wool, which had evidently been torn from 

 the former nest. It presented a striking appearance, as icicles 

 had formed on the rocks, and some over a foot long hung down 

 all about the nest. It contained two eggs. 



March 14, 1910. At 10 a. m. the nest held three eggs, and 

 the male was perched on his usual stub, while the female was 

 on the nest. Both soared off to their usual perch on the dead 

 stub across the gap. 



March 16, 1910. In company with Foster White I set out 

 for the Ravens' nest. As we neared the cliff we saw both birds 

 circling about over the ridge on the opposite side of the gap. 



