I observed this bird at Curtin Wetland on 7/13/10 and 7/14/10. I saw it come up from inside the cattails and perch while holding what appeared to be a fecal sack on 7/13/10, and observed it carrying some nesting material, and descending into the reeds on 7/14/10. Songs and scolds were id'd from Stokes bird song CD (Bird Jam software) and songs in Sibley eguide to Birds (from ipod Touch)