Marshall, (1942) Synallaxis erythrothorax Notes: 3 aruding; 1 lower; or 2 up, 2 lower Lake Olowaga – Restricted to patches of dense brush around edge of marsh or sloughs of lake either with or without open tree growth but not where dense forest. Always paired. No nests seen. Was certainly not as common as we had expected and it was a couple of weeks before Davis got the 1st one. At certain times all would be calling together after thus in early am. Call very distinctive; Petulant and “snapped” out. Most common in brush patches along banks & winding slough or west side lake where slough went thru very open forest.