I attempted to shoot wildlife with a total budget of $350, using a budget camera (Nikon D300) and lens (300mm AF ED-IF). Here's what happened!
Nikon D300 (used): https://ebay.us/PZ6Hcc
Nikon 300mm F4 AF IF-ED lens (used): https://ebay.us/fIJUPE
Better camera for low light (D7200): https://ebay.us/Tnpuyj
Better 300mm lens (AF-S version): https://ebay.us/YW9KZv
DISCLAIMER:
Some of these links have an affiliate code. If you purchase gear with these links I will receive a small commission at no additional cost to you. Thank you!