For a Nikon D60, a 300mm lens can work well for wildlife, but the best choice depends on how you’ll shoot.

A strong prime option is the Nikon 300mm f/4: it’s widely regarded as a solid wildlife lens, lighter and more manageable than 300mm f/2.8 lenses, and Nikon autofocus is generally preferred for speed with moving animals. The f/2.8 options give you more light, but they’re much heavier and more expensive.

If you want more flexibility, a zoom such as a 120-300mm can be very useful in a park. Animals may be closer than expected, and zooming out is often easier than trying to change lenses in a dusty vehicle.

Stabilization helps most when subjects are relatively still, and it can still be useful even when shooting from a car. In Kruger, many shots are taken from a vehicle, so a beanbag on the window or door frame is a very practical support.

A 1.4x teleconverter can be helpful when 300mm isn’t enough, but expect some loss of light and slower autofocus, so many wildlife shooters use one only occasionally.