I have nursed several animals back to health and raised baby animals and had the bittersweet joy of releasing them. I was a vet nurse in a former life and often bought home animals that needed nursing. I pick up a sick or injured bird and put it in a box in a quiet place . Sometimes the birds have hit the window hard and If it recovers after a few hours or overnight I release it. If it is obviously hurt or unwell we go straight to the vet or RSPCA.
I volunteered for a wild animal rescue group. I was the driver that picked up animals others had found and brought them to the group to care for and release. There were many raccoons. Does Australia have raccoons? I don't think so. Because they are so cute, people did not realize how vicious they could be. I remember one that was petted all day at an office; they put it in a box for me and folded the flaps. I put it the back of my car (a hatch back so open to the cabin). It was a hot summer day and I did not have air conditioning, so I had both windows open so as not to distress the raccoon. Travelling down the expressway at 100 km/hr, I see the raccoon coming out of the box. You should have seen me trying to wind up the windows so as not to lose my precious cargo!