Tree Swallow

I went down to Ridgefield NWR yesterday morning and found the portion of the auto route going through the oaks full of Tree Swallows-not surprising considering the number of cavities in these oaks. There were a pair perched on this branch, but the other one was mostly out of sight in this image, so I pasted a bit of moss over what was left of it after cropping. I liked the detail in the coloration that the shaded light brought out-usually the blue is so powerful that it's difficult to see the details.

1Div, 500mm f4 ISL + 1.4TC, propped on pipe insulation over truck window. f9 (from trying to get both birds in focus before they rearranged themselves), 1/80, iso 1600, Av mode with no compensation. No adjustments to exposure or contrast, but some noise reduction and slight sharpening. Processed in CS6 + LR5. Cropped to 7.6MP from the original 16. Taken April 2nd at 7:34 am under overcast skies.

Your comments and criticisms are always appreciated.

Thanks for looking,