DuVal, E.H. 2004 Journal Isla Boca Brava, Chiriqui Prov., Panama 10 April 2004 I staked next E-2 and saw VOY (6) acting very nervous. The chick is doing fine. I entered data for the rest of the morning and part of the afternoon, switching off with Julie. Then I did a watch (1-hour) at BTE4/1, where RGW and GBY were duet-singing for long, high bouts. The watch was interrupted after 20 minutes when a down-whistle chorus of surprising intensity convinced me that I needed to check out the threat. Down near the BTR spiny palm area, manakins were very (Lance-tailed are the only manakin) down-whistling like crazy, mobbing a particular spot of underbrush. There were also yellow-green vireos, a male red-legged honeycreeper, and Swainsons thrushes as well as a few flycatchers. As I approach, a largish, mottled brown bird slightly smaller than a roadside hawk flew away toward BTR. I followed and caught a glimpse of a medium-sized owl (estimated) perched low and standing very erect. The tarsi were feathered, and there were intricate patterns of darker brown on the cinnamon-brown wings