I'm going with Louisiana Waterthrush, but I have observed both species on Mill Run over the years.
Not a detailed closeup, but I wanted to document their Spring arrival.
Best viewed in 'original' size.
NIKON 1 V3 with FT-1,AF-S VR Nikkor 70-200mm f2.8G 1/250s f/2.8 at 540mm iso720
Cropped 4x6" Landscape with Reduced pixels for Internet Viewing
full exif