Social network visualisation a) male and female <i>M. nattereri</i>, b) male and female <i>M. daubentonii</i>, c) female <i>M. daubentonii</i>, and d) male <i>M. daubentonii.</i>

<p>a) <i>M. nattereri</i> male (n = 85) and female (n = 214), modularity  = 0.74, b) <i>M. daubentonii</i> (n = 344), modularity  = 0.66, c) female <i>M. daubentonii</i> (n = 145), modularity  = 0.67, d) male <i>M. daubentonii</i> (n = 199), modularity  = 0.64. Nodes represent individual bats (males, circles; females, triangles) and associations are represented by the lines that join them. Colours indicate the assignment of individuals to social groups using the Girvan-Newman algorithm. Colours do not correspond between panels. Colours in a) and c) are comparable to <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0112225#pone-0112225-g003" target="_blank">Figure 3</a>. The position of individuals within these networks indicates their position in social space and is not an indication of an individual's geographical location.</p

Distribution of a) <i>M. nattereri</i> both sexes and b) female <i>M. daubentonii</i> social groups in Wytham Woods.

<p>Roosts used by bats, and home range estimates are coloured according to social group - colours are comparable to Figure 2, panels a) and c) – symbols indicate colony size and roosts identified by radio-tracking. Roost home ranges are estimated using 100% minimum convex polygons (MCPs). MCPs exclude roosts occupied by a single individual (<i>M. nattereri</i>, n = 42; <i>M. daubentonii</i>, n = 44) or separated by over 1 km from a roost of the same social group (n = 1 for each species). Four adult female <i>M. daubentonii</i> were radio-tracked; two from each of two social groups. The daytime roosts (including trees) used by these individuals are indicated by asterisks and are coloured according to the social group to which they belonged.</p

Lagged association rates within and between sexes of <i>M. daubentonii</i> (left) and <i>M. nattereri</i> (right).

<p>Standard error is calculated by jackknifing over a 30-day period.</p