Visual display of the Aldo Leopold papers : 9/25/10-4 : Species and Subjects

Some of these groups may be further commented upon to advantage. The 
79 ecological investigations embracQ 56 subjects, of which the most popular

are range studies of deer, 7 in number; of other big-game ruminants, bighorn

and elk together, 6; and comparative studies of censu-s methods, 4. 
It is of interest:that despite earlier emphasis on studies of the food 
habits of birds, there are now more dietary investigations of mammals, 38
compared with 34. The favorite species in the bird group is the bobwhite,

with 6 studies under way; and among the mammals, foxes and the white-tailed

deer, with 4 each. 
Life-history roscarchcs are divided, 45 for mammals and 81 for birds. 
The mammalian studies relate to 24, mostly specific grovps, of which 11 are

garme, 8 fur, and 5 of other classification. The white-tailed deer is well

in the lead as an objective, with 7 investigations in as many States. The

bird life histories concern 22, mostly specific groups of game, and 28 
similar groups of nongame birds. It is a satisfaction that wildlife research

is preserving its breadth of scove and has not become merely an adjunct to

game management. The favored species among the game birds is the bobwhite

with 9 studies in progress; the nongame projects are distributed, almost

entirely, one to a srecies. 
Among limiting factors other than disease and predators, grazing in 
relation to game birds with 4 studies, and mosquito-control operations as

affecting wildlife with 3, are in the lead. 
The researches On management items, totaling 121, relate to 78 subjects,

of which 11 are studies of the management of definite groups of birds and
equal number of mammals. The raffed grouse is the favored bird spec~es with

4 projects devoted to it, and the white-tailed deer the most frequently 
selected mammal, with the same number. The ubject from the entire list of

management researches that is receiving most attention is forestry in rela-

tion to wildlife management, with 8 going projects. 
In conclusion it is evident that there is greater appreciation of the 
value of wildlife research than ever before and that there is more of it

being done than in any previous period. Granted reasonable prosperity in

the Nation, these trends will doubtless continue. 
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