Table 3. --Wateorfowl Breeding Ground Species Composition 
by Roadside Census in the State of Montana, 1949 
| 




















um a 
oe ae ee 2 |, - 2 
Geee |£ee [Ede [deel ae | Se 
ence fash leas |etaal ga | 22 
HS @ Oo > oo | o to SEES] SH aq 
SEG Sa2 [a8 ages| ke a 
Mallard 260 38.6 3702 81121 26.7 1169 12.6 
Pintail 1109 18,3 18.8 o2 4 0.9 | 87 Got 
Shoveler 44, TeAl 24 5.9 9117 3.37 84 6.3 
Gadwall 43 Tae 5 oe) oY ey - ah 38 «62.8 
Baldpate 88 14.71 24 5.9] Oo] 30 6.6 1195 14.5 
Redhead = oe ee 9] 130 28.7]101 7.5 
Blus-winged teal 66 11.0] 39 9.5 3] 20 4-4] 63 4.7 
Green-wingsd teal 34 507] 12 2.9 - 2 O41 4h Bel 
Cinnamon teal - -| - - - 6 1.3] 18 1.3 
Ruddy 5 0.8] 9 2.2 9/ 17 3.8] 28 2.1 
Scaup 8 1.31 26 6.4 71 3 0.6 125719.1 
Canvasback 2 0.31 5 1.2 3 - - 7 15 1.1 
Golden-eys - - - - 1 0.2} 18 1.0 
Bufflshead - - - 26 2a 
Coot 4.1] 89 19.7 |202 15.0 
Unidentified 1 One - = 



By combining all of the brood data, there was an average of 6.8 ducklings 
per brood in Class I and 5.1 ducklings in Class III (Table 4). This gives a 
25 percent mortality, for all spsciss combined, between the time of hatching 
and the approximates time of flight. Sufficient data to bs significant are not 
available on all species, but the Class III broods; mallard, 5.2; pintail, 4.5; 
and blue-winged teal, 5.1, indicate a considerable mortality among the waterfowl 
broods in 1949 (Table 4). This apparently high juvenile mortality, however, may 
bs a normal situation in the State of Montana. Only through the use of comparativs 
data obtained in futurs years will the average survival rate be determined. 
133 
