Northern Prairie Wildlife Research Center

A Review of the Problem of Lead Poisoning in Waterfowl

Table 11

Table 11 - Temporal distribution of waterfowl dead of lead poisoning and received at the National Wildlife Health Laboratory, Madison, Wisconsin, 1975-79.a

Month
Species or Group
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Total
No.
%
No.
%
No.
%
No.
%
No.
%
No.
No.
%
No.
%
No.
%
No.
%
No.
%
No.
%
Blue and Snow Goose
5
5.4
8
8.7
9
8.7
1
1.1
1
1.1
-
-
-
-
-
-
-
-
-
29
31.5
39
42.4
92
Diving Ducks
4
7.7
1
1.9
8
15.4
15
28.8
2
3.8
0
4
7.7
12
23.1
2
3.8
2
3.8
1
1.9
1
1.9
52
Puddle Ducks
143
33.5
32
7.5
73
17.1
7
1.6
0
-
0
0
-
7
1.6
8
1.9
13
3.0
14
3.3
130
30.4
427
Canada Goose
160
27.5
161
27.7
73
12.6
1
0.2
0
-
0
0
-
0
-
1
0.2
62
10.7
88
15.1
35
5.9
581
Whistling Swan
2
1.6
121
93.4
1
0.8
2
1.6
3
2.3
0
0
-
0
-
0
-
0
-
0
-
0
-
129
Mallard
106
44.2
14
5.8
25
10.4
4
1.7
0
-
0
0
-
2
0.8
7
2.9
8
3.3
7
2.9
67
27.9
24
Total
240
27.6
337
22.2
189
12.4
30
2.0
6
0.4
0
4
0.3
21
1.4
18
1.2
85
5.6
139
9.1
272
17.9
1,521
aDr. Milton B. Friend, personal communication, 17 April 1985.
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