It was a cold morning, not getting out of the single digits, but the light was nice. My first Mockingbird shot, taken at Salisbury Beach State Reservation.
Camera Model: Canon EOS-1D Mark II
Focal Length: 560.0mm (400 + 1.4TC)
Exposure Time: 1/640
Aperture: f/8.0
ISO equiv: 200
You did a good job on the exposure and I like the composition, perch and clean BG. I think that some levels adjustment to the sky using a mask may help to increase the contrast between the bird and BG.
Juan's repost really made the image pop. I love how the branches frame the subject below and left. Now if you can only convince the mockingbird to turn its head a bit towards you!