Table 60.--Geographic and Annual Variations in Annual Mortality 
Rates for Adult Mallards 
These dynamic life-table compilations are abridged because not all the mortality data 
were available at the time the tables were compiled. In a few cases the number of 
deaths was estimated (see note no. 3). The incomplete mortality data make the rates 
calculated for the 190 and 1941 cohorts higher than that obtainable from complete 
data. Each year begins September 1. Hunters' reports turned in by banders were 
excluded, 
e-table Data cific Years ean Mort. - 
When Type of Where TO TEI he 3 ar ES 'h6 Total Rate for 

Banded Statistic Banded . to to to to to to to Ist ond all 
th) h2 3 hh 'hS th6 #h7 yr. yrs yrs. 
19,0 ‘Numbers Canada 2/: 65 2 bh 5S 8S 2 2 Wy, 
reported Tllinois 110 51 35 20 18 8 3,245 
as Oklahoma w2 55 he 15 Ww 12 6 ¥ 286 
shot f00,ATKe,L&e 17%, 76 7? 2 W 7 Xk 3? 
SUBTOTAL h91 206 135 68 8 29 15 992 
19L0 ‘Numbers Canada 1/ 1h 4g 25) (lly 9 4k 2 #217 5ST ~ 53 
alive at Illinois 2h5 135 8h ug 2 h 3 556 4S 38 hb 
start of Oklahoma 286 lbh 89 U7 32 18 6 622 50 38 h6 
each year Mo., Ark., Lae 347 173 97 SO 22 11 #4 7Oh SO hh 49 
SUBTOTAL 992 S501 295 160 92 kk 15 2099 U9 hl h7 
1941 Numbers Canada Wy OL 35 16. LO 2 11 135 
reported Tllinois 67 43 13 13 6 6 8 
as Oklahoma 181 101 50 43 33 16 3/hak 
shot Mo., Ark., La. 136 63) 33 225 9 288 
SUBTOTAL bhS 2h2 112 88 66 2 995 
1941 Numbers Canada 1/ 135 7h 39 23 #13 1 295 Ys — 6 
alive at Illinois 148 81 38 25 = 12 6 310 kS — 46 
start of Oklahoma h2h 243 We 92 wk 16 966 3 k2 bh 
each year Mo., Ark., La. 286 152 89 56 3h 9 628 U7 bl U6 
SUBTOTAL 995 550 308 196 108 2 2199 kh.7hb bs 
T9L6- No. reported shot TOTAL 
191 No. alive start 
each year TOTAL 1496 8h5 468 288 152 57 3306 2/ 
1940 Mortality rate per annum 9 hl = =6 2 - - - 47 Li? 
19h1 " " " " Lue7 bh 3605 e 5 LS 
1940-19,1 " " " " 43-545 38 7? 62 - 4s 45 

1/ Prairie provinces only; Alberta is included in this sample but was dropped from subse- 
~ quent samples designed to represent the Mississippi Valley population of mallards. 
2/ Excluding the data for the year 190-1. 
3/ Estimated at a time when the data were not available. 
