Basileuterus culicivorus El Iniol, 230m, 19.5 km. NNE Encarnacion by road, Dpto. Itapua, Paraguay. 23 September Super Fern and Cross Creek Trails, where the first B.c. I heard was B20. I walked farther down Cross Creek Trail and heard two B.c. I was not sure if the one furthest to the NW was not B20, so I recorded the one further SE (B21). I believe that the bird to the NW was likely another bird, though. When I walked through the cornfield (after leaving Cross Creek Trail) I heard a bird which I recorded (B2?) In the background I could briefly hear a B.c. singing, a bird which might be B17. While returning to the hotel I passed by B10 and B8 and heard B10. 24 September Today I was trying to get series of birds (Red-eyed Vireos in particular), new species and Empidonax recordings, and not really concentrating on Basileuterus. I did hear B11, B12, B4, B5 (?), B10, B14 and B2, and did not hear B6, B9 and B1. I also heard the bird I've probably heard before near B6, but I did not record it. Between B6 and B10 I came across two B.c. giving some typical B.c.