A 61-year-old male motor cyclist collided with a kangaroo some 5kms south-west of Grafton on Sunday morning (November 4).
The patient was taken to Grafton Hospital in a critical condition with head and chest injuries.
He was subsequently taken by Westpac Rescue Helicopter to Gold Coast University Hospital.
The chopper returned to Grafton Hospital some hours later to pick up a man who had been injured in a side-by-side farm buggy rollover on a rural property near Lawrence.
The 74-year old man suffered chest and arm fractures
He was flown to Lismore Base Hospital for further treatment.