While I can't comment on the accuracy of the red color (not having seen one in person), the detail and sharpness are very, very good--nice to be able to go to f/10 to get the whole bird in focus. Nice HA and composition. Some might quibble over the lower branch but it doesn't bother me. Very well done. Cheers.
Good move on the f/10 to get the DOF needed for over the shoulder look.
I would desaturate the reds as the detail is blocked up. Not as much a problem of exposure as it is saturation. Canon is very red sensitive so normally needs to be adjusted for subjects with brilliant reds.