You asked
Is the tamron 28 300mm f 3 5 6 3 di vc pzd good for wildlife?
Yes, it's a sensible all-round choice for wildlife, with one caveat: on full frame it stops at 300mm, and it narrows to f/6.3 at the long end, so you'll need decent light. It's stabilised and autofocuses, which helps when you're following an animal.
On an APS-C body, the reach stretches to roughly 450-480mm equivalent, which is where it starts to make real sense for distant animals. I'd pair it with the Nikon D500 or the Canon EOS 7D Mark II for that extra reach. On full frame, the Nikon D850 or the Canon EOS 5D Mark IV are solid bodies, but you'll be working at 300mm, so get close or crop.
For what a wildlife setup needs in general, see wildlife and sport.
Written by Claude from this site's pages.