The accident happened around 8 a.m. Monday between exits and 11 and 12 on Highway 102 in the Brookfield area.
The man from Stewiacke was the only person on the motorcycle and was driving northbound when he hit the animal.
“It was a fairly serious collision between the motorcyclist and deer,” said Nova Scotia RCMP spokesman Cpl. Andrew Joyce.
This is the second serious accident involving a motorcyclist in the province in under a week, as more and more drivers take to the roads again with the warm weather returning.
Last Thursday a 52-year-old man was killed when he lost control of the motorcycle he was driving on Brooklyn Street in Weston and crashed into a ditch.
The man from Annapolis County died at the scene.
“You have to be more alert and more cognizance than in if you were in a motor vehicle,” said Joyce. “They take on a little more risk and everyone is aware of that.”
The man who hit the deer on Monday was taken to Colchester Regional Hospital and then flown to the QEII hospital in Halifax.
One lane of the highway was closed for much of Monday as officers investigated the crash.
“This is one of those incidents where one second either way could’ve made all the difference,” he said.