Not a bird strike.
From the CBC web site:
Don Enns, the regional manager of air investigations at the TSB, said that
a superficial examination has shown that there isn't any damage to the front of the engine, where the fans are located. "The failure appears to have happened in the turbine section," located at the back of the engine, said Enns.
Investigators have collected the flight data recorder and cockpit voice recorder, which may yield more clues about what happened, said Enns.
It could be a few weeks before investigators are able to remove the engine, disassemble it and examine it thoroughly, he said.
This would seem to rule out ingestion of a bird.