Vole mother’s (Microtus arvalis) time spent in their burrow entrances (during 36 hours). This variable was measured as mean number of antenna readings per second (possible maximum = 6 readings per second, indicating that the animal sits in the antenna ring; < 3 readings indicate a fast passage) in the presence of a nest predator (NP, shrew, Crocidura russula), a interspecific resource competitor (RC, field vole, M. agrestis), or a intraspecific competitor control individual (C). Data derived from circular antennas fixed at each burrow entrance connected to automatic transponder reading stations.
Liesenjohann et al. BMC Ecology 2013 13:33 doi:10.1186/1472-6785-13-33