
Aerial Transeets--leaterfowl Population Densitiss 





fat. Pre, 
Per Sq.Nt. 
WCE 




Soil Region fq. Mi. Ducks |Coots|]Sq.Mi. 



Contral Sand 68.01 3264149 «0.8 
La9 

L.@ 0 2al " 
S.E.Niami, FSL 42.01 BL 27 9.7 9.8 49° «0 is 0.0 
os Miami 50.51 fel 51 O<.8 1,6 Lll 0 fae 0,0 
sak. Driftlsss ae FA 1 1 6,0 Ga = G Oy 0.0 
Prairie Soil 5,00 6 6 0.8 oO.8 5 0 0.8 o.9 
Red cley Soil 15.28 i awe 25 0 1.4 0.0 
N.E. Sandy 3,10 1 Laos ee Os 9 il Oe 0.0 
H.C. Sandy 17.95 3 93 6.2 0.2 fe ih "oe 0,0 
NW. Sandy BT. Te 1? 45 2.39 OF 65 100 1.1 1.7 
Boone Sundy, EB. 17.643 R 10 4.5 O.4 14 1,0 o.0 
Kennan Loam 101.83 36 lll O.4 2. i960 4.9 0.0 
Colby Silt L, 16,25 o,7 a,2 a o 0.4 O40 
TOTAL 423 6 184 416 O.43 0.98 100 wan C,2 


Speeiss Composition as Indicated by Agrial Transscts-Watorfowl 
Breeding Ground Survey 



Parecent of 

raira 
Mallard ae 21 Gea 26 201 71.6 
Black duck 6 3 ; 1é 6 i 26 2.8 
Pinteil ne oe: 1 6 2 af it 
H-w. teal 2 5 a Li 4 18 42 ede 
ohoyel sr if Z o 3 1 él 5 0.45 
Kood duck ft al i) a) 5 dds 28 3.0 
Ring-usek 11 a) 0 14 13 45 be opty 
Scaup ) OG 0 22 l2 405 439 36.3 
Bufflehead o 0 0 2 1 } 3 29 
ilsoded mere, 2 2 a 4 2 a) 6 0.6 
Puddy duck o 0 t if, 0 7 7 1.0 
Canada goose Q a Q 0 a 3 4 0.4 
Unidentified 14 -- 50-- 14 1 Lt 171 16. 
TOTAL 2b BE 580 3 190,09 
Coot Log OO 
From the above data on atrial tranescts it sappears_that Wisconsin has some- 
thing less than ons pair of bresding waterfowl por square mile. In sxamining 
tne abov¢s data the rsader will observe thet estimated pairs ptr square mile 
Coanated By the Fish and Wildlife Services mstied of counting only lone birds and 
bracding pairs is 9.43 pairs. This figure 1s sigmificantly lower than the State 
average of 0.65 pairs computed on ths basis of ground transects. In the opinion 
of ths writer this discrepancy may leresly be attributed to blue-wingsd teal 
which are obyinusly missed much cof the time by atrial cansus. Aliso, the reader 
wil] observe thet the Wisconsin Conservation Department mathod of computing 
breeding pairs oer square mile f(i.s. lene birds plus pairs clus sumrering drakes} 
