Great pics and I'm pleased you like your lens.
IMHO, the Tammy 200-500 is one of the best bang-for-bucks lenses on the market today. Had mine over 2 years now and can't fault it. you don't see many of these on the s/h market.
Works great with the Manfrotto 393 tripod head too, at least I think so, see
Accessories
Good luck.
Denis.