Multiple Captures of Reithrodontomys megalotis: Social Bonding in a Mouse?

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Abstract
Detailed analyses of multiple captures of R. megalotis using live trapping [in California, USA] indicate that individuals of this species frequently travel in pairs. Female-male combinations were the most prevalent and were obtained more often than expected by random process. Significant direct correlations were found between population density, absolute number and proportion of captures involving more than one individual. Double captures were most common during the nonbreeding season, but it is unclear whether this trend occurred because of behavioral changes relating to the nonbreeding condition or because populations were simply relatively high during the nonbreeding season. Traveling in pairs may be advantageous in avoiding predators, seeking food or for mating purposes.

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