Alder/Willow Flycatcher: Bickham Dickson Park, Shreveport, LA, September 19, 2008.  Alder and Willow Flycatchers are very similar to each other and are not easily distinguished except by call.  I cannot hear the calls of these birds because my hearing is impaired.  However, this is probably an Alder Flycatcher because of the strong eye ring and the olive color on the back.  The Willow Flycatcher usually has a paler back.