104 



THE CONDOR 



Vol. XX 



Fig. 13. Nesting sites of White-throated Swift were in the face of the bluff a lit- 

 tle TO RIGHT OF CENTER OF PICTURE; DEBRIS SLOPE AT BASE; GRAND RlVER, COL- 

 ORADO, IN FORE. 



dred feet of work, rope ladders, anchors, miner's picks, cold chisels, etc. On 

 June 24, with three experienced young assistants, I took train, crossing the 

 Continental Divide at an elevation of 11,666 feet that evening, and located and 

 briefly prospected our ground, two miles distant from our stopping place. 



* -* 



• 



: ,*> 



Fig. 14. Showing from above and in rear the sequestered pinnacles the faces of 



WHICH WERE FAVORITE NESTING SITES OF THE WHITE-THROATED SWIFT; GRAND RlVER, 



Colorado. 



