Number observed: 1
Details: Flew alongside our moving vehicle before landing in riverside vegetation. Smallish passerine, dark 'dead' brown above with clear dark 'capped' appearance. Much lighter below with dusky gray chest markings but a nice faint yellow suffusion on the underside and lower belly contrasting with the dark tail. Flew with a slightly 'floppy' action on shallow undulations and rounded wings. Distinctive when seen well. A common breeding bird in this area, though this one is late.