Fig. 3.

Correlations between nesting behaviors and Fos immunoreactivity in the social behavior network. Lines represent significant correlations between nesting behaviors (the depositing of nesting material in males and the time spent in the nest cup in females) and the number of Fos immunoreactive nuclei in bed nucleus of the stria terminalis, medioventral division (p < 0.05). Correlations were derived from stepwise linear regressions. Within each graph, the regression coefficient for the behavior and model p value are presented. Micrographs of sampling squares taken in tissue stained to label neurons producing Fos in BSTmv in the right hemisphere of a female finch who spent the most time in her nest and a female finch who spent the least amount of time in her nest (bottom left). Scale bar represents 50 μm.