A great starter wildlife kit would be the Panasonic G9 first version and the Panasonic 100-300 lens. The micro four three sensor will give you double the reach which is 200-600 mm. The stabilization in this combo will be excellent for wildlife including small birds. The limitations of a smaller sensor in low light can be greatly improved by modern software such as DXO Photolab or Topez. This kit would be reasonably priced especially if buying new.
