Shrews are very vocal animals. We tested behaviourally whether the high-pitched laryngeal 'twittering' calls of as-yet unclear function serve for communication or echo-based orientation. We used a representative species from each of the two largest phylogenetic groups of shrews. In both species, experimental manipulation of substrate density, but not of the likelihood of conspecific presence, a...

background: the prevalence and intensity of endo and ectoparasites in shrews inhabiting in the dasht-e razan of hamedan province, iran, were determined in this study. methods: by live traps, 64 shrews belong to species bicoloured white-toothed shrews ( crocidura leucodon ) were trapped during 2010-2012. captured animals were euthanized and their gender recorded. the blood thick and thin smears ...