| http://www.w3.org/ns/prov#value | - These differences are proposed to relate to differences in need for concealment as an anti-predator strategy; (2) differences in availability of suitable helpers; (3) differences in nursing frequency, such that the smallest, fastest growing species are more limited in the extent to which mothers may relinquish infant carrying to others. ?? 1994 Wiley-Liss, Inc.
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