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Both male and female North American elk grow thin neck manes; females of other subspecies may not. [32]: 37 By early summer, the heavy winter coat has been shed. Elk are known to rub against trees and other objects to help remove hair from their bodies. All elk have small and clearly defined rump patches with short tails.
A cow/calf winter herd is a herd that consists only of female elk and their young. In a normal winter, defined as one where there is a decent amount of snow fall, one study found that when the groups of cows and calves were safe from predation by wolves, about 75.6-83.0% of their diet was made up of graze whereas when wolves were present this number dropped to 61.6-69.4%. [3]
An illustration of the three idealized types of curve (logarithmic scale) A survivorship curve is a graph showing the number or proportion of individuals surviving to each age for a given species or group (e.g. males or females).
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This list of mammals of Oklahoma lists all wild mammal species recorded in the state of Oklahoma. [ 1 ] [ 2 ] [ 3 ] This includes mammals that are extirpated from the state and species introduced into the state.
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The eastern elk (Cervus canadensis canadensis) is an extinct subspecies or distinct population of elk that inhabited the northern and eastern United States, and southern Canada. The last eastern elk was shot in Pennsylvania on September 1, 1877. [1] [2] The subspecies was declared extinct by the United States Fish and Wildlife Service in 1880. [3]
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