far from cover being the most vigilant. Vigilance in individual kangaroos does not seem to significantly decrease when the size of the group increases. However, there is a tendency for the proportion of individuals on the periphery of the group to decline as group size increases. The open membership of the group allows more kangaroos to join and thus provide more buffers against predators.

Reproduction

Eastern grey kangaroos are polygynous which means that one male mates with multiple females. Males do a lot of intraspecific

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