Migrating Rufous have temporarily joined our aerial circus. Second only to the feeders the top of the lemon tree is hotly contested territory. Winter rains were sparse in much on the Sonoran desert this year, so the territory around feeders is especially prized. This well groomed bird was shot at just before full dusk. He was facing the setting sun but with the small aperture used to improve DOF most of the light was supplied by the flash through a Better Beamer.
Aperture Value - F 16.00
Exposure Bias Value - 0
Max Aperture Value - F 5.66
Subject Distance - 6.16 m
Metering Mode - Spot
Flash - Flash fired, Compulsory flash mode
Focal Length - 700 mm (500mm + 1.4)
Exposure Mode - Manual
Good flash work, well exposed, like the well scaled perch, head angle.
The head seems just a little less sharp than the body, which surprises me a bit at this f/stop, should have had enough DOF. You didn't mention your shutter speed, so possibly a little motion blur.
I generally wouldn't use such a small f/stop, inorder to have more flexibility on aperture and shutter speed.