. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 86 CALIFORNIA FISH AND GAME migration, indicated a 50% fawn loss on the summer range. December counts, after the migration, indicated another 50% loss of the fawns that survived the summer. It is not possible to infer the exact timing or cause of the second loss period, but it is clear from the co^'ote scat analysis that the tirst loss period occurred during or shortly after parturition. There are three major possible causes of post p
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 86 CALIFORNIA FISH AND GAME migration, indicated a 50% fawn loss on the summer range. December counts, after the migration, indicated another 50% loss of the fawns that survived the summer. It is not possible to infer the exact timing or cause of the second loss period, but it is clear from the co^'ote scat analysis that the tirst loss period occurred during or shortly after parturition. There are three major possible causes of post partum fawn mortality, (i) predation, fii) stillbirth or weak fawns due to inadequate nutrition of the pregnant doe, and, (iii) poor quality or quantity of milk due to inadequate diet of the lactating doe. Although it is impossible to rule out predation as the major cause of mortality, both low coyote and deer densities in the study area, and the excellent fawn cover provided by forest and brush habitats, would tend to minimize predation pressure on fawns. Verme's work (1962, 1963), on the effect of pregnant doe nutritional plane on fetal growth and fawn survival demonstrated in- creased post partum mortality from penned does on poor diets, with fawn mortality inversely correlated with size and weight of the fawn at birth. Salwasser (1972, p. 24) discussed late gestation nutrition as a factor in increased fawn mortality in the North Kings herd. The range used by deer during late gestation, mainly transitional yellow pine forest, has declined in both quality and quantity of forage avail- able to deer. Preliminary fetal analysis indicated fawns may not attain optimum size or weight by birth. To date there is no information on milk quality or quantity from lactating does in the herd, but the weekly pattern of fawn remains in coyote scats strongly supports the LU Q O LJ a: o o o. JUNE 1-15 JUNE 16-30 JULY |-I5 JULY 16-31 AUG. |-I5 AUG. 16-31 COLLECTION PERIOD FIGURE 2. Percent occu
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