I know of three elevator jam events on airliners. DC8 at JFK where a chunk of asphalt from construction project somehow wound up in the elevator/stabilizer gap. Crew only onboard, fatal to all.
MD80 at Detroit, well past decision speed, airplane was not responding to elevator inputs, takeoff rejected. My recollection is that all on board escaped with minor or no injuries.
Most recent: Privately owned MD80 at a Houston satellite airport, similar to above. Went off end of runway and burned but all onboard survived.
Suggesting this as one of many possibilities with the Lear.
I have hit a bird at night. Birds at my home base fly a lot at night.