6S 
Table 4 ~ Comparisons of Mizixmium Species Breeding Populations in South Dakota 
a. ae i ee Eee -. he 





DON aor ee ee ee ra a oT Sa a a eg aa a a rae a in we ac ne Sa renee Oe Soar acan a  ——— 
957 Comparison 1950-56 Comparisons 
1956 Be lehte ve, 5On5S: - 
Minimum Minimum Percent Minimum Change Percent 
Spocies Population Population Change Change Population a9o7 - Change... 
eo TRE - I edn En ae DP a tr ae an ea OR pe cid a mr rn ere ed 

B.W. Teal 275,100 192,600 ~--&2,500 ~ 30% 238,400 -~105,800 - 35% 
Pintail 36,600 35,700 - 900 = 2% 116,400 ~ 80,700 - 69% 
Mallard 54,600 32,400 ~~ 22,200 - 41% 95,400 ~ 63,200 -~ 66% 
Shoveler 73,300 36,200 += 37,100 - 51% 63,000 ~ 26,800 ~ 42% 
Gadwali 35,100 25,200 9,900 «=~ 28% 26,200 » “1,000 -~ 4% 
Redhead 19, 400 14,700 ~ 4,700 - 24% 18,800 -~ 4,100 - 22% 
L., Scaup 38,100 38,100 None None 32, 300 + 5,800 + 18% 
4 
Canvasback 3,000 2,600 = 406 = 13% 3,100 - 500 - 16% 
Baldpate i9,400 15,700 3,700 - 19% 5, 700 + 10,000 +175% 
G.W.Teal 6,000 5,200 - 800 ~ 13% 1,200 + 4,000 +333% 
Ringneck 800 900 + 100 ++ 12% x ‘ _ 


‘ D = 
- Si ppae ete ae or eae sa caraicnne men re Sa a an me a Oe = —— ma ar ar ep 
aa er ee hg baat trp one ie ea ee SY > So Rn ee aan ae ee et a TON ee dE a ad 
EPG dane es a re: 
-2601,400 - 40% 
Total 561,400* 399,300 -162,100 ~~ 30% 660, 70 
: eee Menten ena ate eerie oe seme en eee reenact ee Sa NN are dete er oer So pee oe ee ope ern en ee a ee 
68 DIU SI TS ee aN oe NE em ae Ree A zim a et SS ee eae ee ae 


Ruddy Ducks eliminated from comparisons 
AVMATA TVY INAD 

