114 



V. S. BUREAU OF FISHERIES. 



make it after the St- Paul count, when one person was obliged to do 

 both; and in 1920 it was thoufrht best to continue the usual dates 

 However it there is some one on the smaller island to whom the work 

 can be delegated, it should be done. It was quite evident that harems 

 had begun to break up and some of the bulls which had completed 

 their duties had resorted to the hauling grounds and elsewhere before 

 the count was finished. Their places had been filled, of course, but 

 it IS better that the count be made just as the first harem masters are 

 leaving. 



Before the count was made it was plainly to be seen that the class 

 tormerly called "surplus bulls" was not large enough to warrant 

 much killing. It had been the practice in 1917, 1918, and 1919 to 

 class those animals which were found in apparently permanent posi- 

 tion as " idle bulls " and others which evidently moved from place to 

 place as 'surplus bulls." Naturally, these latter did not constitute 

 the whole of the class, because there were always some on the haulincr 

 Founds and m the water in front of the rookeries. Since conditions 

 in 1920 had closely approached those of 1916 in this respect, it seemed 

 entirely proper to follow the former practice and sj^are the class in 

 the killings. By doing this there is a "margin of safety" for the 

 breeding males which is maintained Avithout enterii.^- into the com- 

 putations. 



Habem anu Idle Bulls and Percentage of Idle Bulls to Harem Bulls Com- 

 pared TO Average Harem, 1920. 



Rookery. 



ST. PAUL ISLAND. 



Kitovi . . . 

 Lukanin . 

 Gorbatch. 

 Ardiguen. 

 Reef 



Sivutch 



Lagoon 



Tolstoi 



Zapadui 



Suthetiuiga 



Little Zapadui. 

 Zapadui Reef... 



Polovina 



Polovina CUJffs . 

 Little Polovina. 



Morjovi 



Vostcx;hni 



Total. 



ST. QEORGE ISLAND. 



North 



Starava Artil. 



Zapadui 



South 



East Reef 



EastClifls.... 



Total 



Total, both islands. 



Date. 



July 18 



...do 



July 19 



..do 



..do 



...do.... 

 July 20 

 ...do.... 

 ..do.... 

 ..do.... 

 ..do.... 



..do 



July 18 



..do 



..do 



July 17 

 ..do 



July 23 



..do 



July 22 

 ..do..... 

 ..do.... 

 ..do 



Harem 

 bulls. 



132 



95 



253 



40 



528 



190 



14 



408 



423 



IdlebuUs 



297 

 28 



177 

 86 

 49 

 97 



725 



3,542 



199 

 112 



27 

 4 



67 

 115 



524 



4,066 



57 

 28 

 40 



8 

 70 

 60 



3 

 65 

 85 

 16 

 62 



5 

 76 

 24 

 48 

 99 

 333 



Total. 



13 



83 



1,161 



189 

 123 

 293 



48 

 598 

 250 



17 

 473 

 508 



16 

 359 



33 

 252 

 110 



97 



196 



1,058 



Idle bulls 



to harem 



bulls 



Per cent. 

 43.18 

 29.47 

 15.81 

 20. 00 

 13. 26 

 31.58 

 21.43 

 15. 93 

 20. 09 



4,620 



216 

 132 



32 

 4 



95 

 128 



607 



5,227 



20. 88 

 17.86 

 42.37 

 27.91 

 97.96 

 102.06 

 45.93 



Average 

 harem. 



30.43 



8.54 

 17.86 

 18.52 



41.79 

 11.30 



15.84 



28.55 



28.52 

 30.86 

 40.52 

 29. 50 

 44. 77 

 44.08 

 24.36 

 42.37 

 38.77 



42.07 

 19.00 

 .33. 93 

 29.92 

 34. 92 

 30.27 

 45.32 



40.45 



45.86 

 53.07 

 33. 59 

 24.75 

 38.37 

 48.74 



46.28 



41.20 



A c-omparison of the foregoing table with the corresponding one 



. non '^ T'T, *, * *^^^^^ ^^^ ^^^^ ^ reduction of harem bulls of 

 1,092 and of idle bulls of 1,078. There were even fewer animals in 



