Immunoreactivity for serotonin transporter was seen throughout the brain, most notably in the pretectal nucleus (Pt; A), the lateral geniculate nucleus (GLv; B), and the nucleus taeniae of the amygdala (TnA; C). In general, the labeling agreed with the previously reported distribution of serotonin immunoreactivity in birds (see text). Rt, nucleus rotundus. Rostral is to the left. Scale bar = 300 μm.