Trying to decide which one for mostly bird,wildlife to use with my Tamron 600mm. Have been using my 6D which works ok. But like the either of these for the extra reach, faster fps and more focus points, but am leaning toward the 80D. I know 7D has faster fps, but 80d is a newer, more megapixels and the articulated lcd among other things.Any thoughts and input would be welcome. These were taken this past week .Thanks