ALASKA FUR-SEAL ROOKERIES, 1910. 5 



attention and as far as practicable was examined at intervals of about 

 three days with the following results: 



Development of Kitovi Rookery, Season of 1910, as shown by Counts op 

 Seals on Different Dates. 



The past winter was unusually severe and long continued, delaying 

 the breaking up of the drift ice, the melting of the snow, and the 

 appearance of flowering plants for upward of three weeks. It is 

 interesting to note, however, that this delay did not affect the sum- 

 mer resident birds, which put in an appearance at the customary 

 time, though compelled in numerous instances to deposit their eggs 

 on the snow. Nor did it hinder the migration of the seals, though 

 several cows likewise took up positions on snow drifts, where they 

 and the pups appeared to be unmindful of their unusual habitat. 



HAREM COUNTS. 



In accordance with the custom pursued in past years, the counts of 

 harems were made as nearly as possible at the "height of the season," 

 occurring July 12-16. Owing to stress of weather Sivutch, or Sea 

 Lion Rock, rookery was not counted, but was estimated as containing 

 61 harems, the number found last season. 



Summary of Harem Counts, 1910, and Comparison with 1897 and 1909. a 



Figures for 1909 are those of Mr. George A. Clark. 



b Estimated. 



