Vol. 5, No. 5 
Page 4 
Table 4.- - Preyear ling * raccoons expressed as percentages of all raccoons 
autopsied at the Bauer Fur Company, southern hunting zone, and the Perardi Brothers 
Fur Company, northern hunting zone, during the 1961-62 fur season. 
Period 
Northern 
Hunting Zone 
Southern 
Hunting Zone 
Entire 
State 
Males 
Females 
Males 
Females 
Hales Females 
First Half 
of Season 
73.9(157) • 
i- 74.2(221) 
82.5(154) 
65.9(179) 
78.1(311) 70.5(400) 
Second Half 
of Season 
57.8(192) 
57.8(135) 
55.8(231) 
52.1(167) 
56.7(423) 54.6(302) 
Entire 
Season 
65.0(349) 
68.0(356) 
66.5(385) 
59.2(346) 
65.8(734) 63.7(702) 
Hales were aged according to characteristics of the baculaj females were aged 
according to presence of placental scars and the closure of the epiphyses in 
the radii and ulnae. 
i Numbers in parentheses indicate sample sizes. 
The comparative data suggest that the production of females during the summer 
of 1961 was nearly equal to that of males, table 4. In the sample from the northern 
hunting zone the percentages of preyearlings in the male and female samples were 
nearly equal, table 4. However, in the southern hunting zone preyearlings com¬ 
prised 66.5 per cent of the males sampled but only 59.2 per cent of the females. 
The reasons for this difference are unknown. 
A strong tendency for preyearlings to be caught earlier than older raccoons 
was noted, tables 3 and 4. This tendency was expected because younger animals 
are usually less wary and thus more easily caught than older animals. 
6. Waterfowl Inventory F. C. Bellrose 
Project inactive during May. 
7. Wildlife - Insecticide Relationships R. W. Lutz 
A nest study was conducted along the osage-orange hedgerows on the Donovan, 
Beaverville, and Iroquois areas during 1960 and 1961 to evaluate the effects of 
aldrin on dove and songbird reproduction. The Donovan and Iroquois areas were 
treated with 2 pounds per acre of aldrin in the spring of 1960 and 1961, respectively. 
The Beaverville area was not treated in either 1960 or 1961. 
