PROBABLE EFFECTS OF AX IDEAL BOUNTY LAW. 



157 



Hypothetical table, showing in detail the probable effects upon the numbers of English Spar- 

 rows in Ohio, of a high and annually increased bounty dining fire successive years, under 

 the most favorable circumstances. 



Quarter. 



First year: 

 Jan. to Mar . . 

 Apr. to June . 

 July to Sept . . 

 Oct. to Dec . . 



Sparrows 

 iu the 

 State at 

 the begin 

 ning of 

 each quar- 

 ter. 



Pairs 

 breeding. 



Young 

 hatched. 



Adult 



Sparrows 



killed, t 



40,000,000 1 20,000,000 



20, 000, 000 10, 000, 000 40 000, 000, 8, 000, 000 

 32,000,000 6,000, 000 12, 000, 000 4,000,000 

 24,000,000' 



Total for year 

 Second year: 

 Jan. to Mar ... 

 Apr. to June . .. 

 July to Sept .. 

 Oct. to Dec 



I 7, 200, 000 ! 3, GOO, 000 14, 400, 000 

 i 11, 520, 0u0; 2, 160, 000' 4, 320, 000 

 , 8,6-10,000,. 



Young 

 killed.; 



Immature T-.+ -.1 

 Spairows lf JTai 

 killed in number ol 



third b ^°r 



quarter.^ 



20, 000, OOo 



20, 000, 000 28, 000, 000 



6, 000, 000 10, 000, 000 20, Ot'O. 00(1 



600, 0001 j | 9, 600, 000 





50 

 46f 

 45£ 

 40 



77, 600, 000 S4j 3 5 



7, 200, 000 



2, 880, 000 

 1, 440, 000 



3, 456, 000 



i ; 7,200,000 



7,200,000 ' 10,080,000 



2, 160, 000: 3, 600, 000 7, 200, 000 

 i. i 3,456,000 



50 

 46| 

 45£ 

 40 



Totalforyear .| .' | I | 27,936,000 84,- 3 n 



Third year: 

 Jan. to Mar 



Apr to June . 

 July to Sept ... 

 O t. to Dec .... 



5,184, 



2, 592, 

 4, 147, 



3, 110, 



ooo! 



000 

 200 



400 



1,296,000 5,184,000 

 777, 600 1, 555, 200, 



2,592,000 2, 



1,036,800 2,592,000 3, 



518,400; 777,600! 1, 296, OOOj 2, 



1,244,160 1, 



592, 000 



50 



628, 800 



46f 



592,000 



45* 



244,160 



40 



Total for year. 

 Fourth year: 

 Jan. to Mar .. 

 Apr. to June .. 

 July to Sept .. 

 Oct. to Dec 



1.806, 



933, 



1, 492, 



1,119, 



466,560 1,866,240; 

 279, 936 559, 872 



933, 120 

 373, 248 

 186, 622 

 447, 898 



933,120 



279, 936 466 560 



10,056,960 84 j 



Total lor vear 

 Fifth year: 

 * Jan. to Mar 



Apr. to June . .. 



July to Sept . - . 



Oct! to Drc 



671,848 

 335, 9?4 

 537, 478 

 403, 108 



167,962 

 100,777, 



671,818 

 201, 55 I 



335, 924 

 134, 370 

 67,185 

 161,243 



Total foryeai 



335, 924 

 100, 777' 



167, 962 



933, 120 

 , 300, 368 

 933,118 

 447, 898 



50 

 46j 

 45£ 

 40 



3, 620, 504 84 r 3 <5 

 335, 924! 50 



470,294 

 335, 924 

 161,243 



4bj 

 454 



40 



1,303,385; 84, 



Total number killed during live years, 120,516,849. Living remnant, 241,865. 



* Equals four to each pair in second quarter; two to each pair in third quarter. 



t Equals first quarter, 50 per cent. ; second quarter, 40 per cent. ; third quarter, 33^ per cent, 



f Equals 50 per cent, each quarter. 



\ Equ lis 50 per cent. 



As to the cost of bounties during' suck a live years' war nothing bet- 

 ter than rough estimate * can be given, for it is impossible to know with- 

 out trial how large a bounty would be necessary to secure the destruc- 

 tion of 50 per cent, of all the Sparrows in the State during the first three 

 months. It is certain that one or even two cents apiece would not suf- 

 fice, and it is doubtful if three cents apiece would secure this end. Pos- 

 sibly the necessary rate could be ascertained by experiment, aud after 

 this had been maintained for a year, and the Sparrows had decreased to 

 about one-third of their previous numbers, other experiments could be 

 made in order to determine the rate necessary to secure a continuance 

 of the same ratio of decrease. It is but reasonable to suppose that if 

 Sparrows are but one-third as plenty (and three times as shy !) as for- 

 merly it will be worth at least three times as much to kill them ; but, 

 allowing that it costs only twice as much to maintain the same rate of 

 decrease, it will be very expensive, nevertheless, to continue this dur- 

 ing four years. 



