I also posted this on the observation thread pg 133 I think, so I copied it here also.
Just my observation, but I think the pics that BT got earlier were of
Thunder, mostly because of the brownish color on the chest. If you
look at most of the pics we have posted of Thunder, especially the one
that was taken last week of the full wing span, you can notice the
color. The one of Kay & Jay on the golden rod their chests are
white. Check out this link as well, they have pics from the very
beginning since the eggs hatched. There are about 5 pages of posts,
lots of pics
http://discuss.hancockwildlifechannel.org/viewtopic.php?f=12&t=2671&st=0&sk=t&sd=a
I don't think that Thunder has ventured off the building & flown
around yet. There is lots of room on the roof for Thunder to practice
lifts etc to sharpen his/her skills. I am going to post this on the
photo thread as well because of the link for pics.