This one has been at Blandy for a long time; looks to be having the start of a problem - hope not, as it's the only one at the Virginia State Arboretum.
See 'next' for a view from a different angle.
Nikon D800
,AF-S VR Nikkor 70-200mm f2.8G 1/250s f/9.0 at 70.0mm iso1600
UnCropped FX Image with Size Reduced for Internet Viewing
full exif