In this case a parachute would have done no good. The time it would have taken to get out and deploy a parachute was too short at the altitude these planes were flying (about 1000 feet).
Note: I am listening to the Palomar Airport tower right now and an airplane there just reported a bird strike to its windshield. Apparently not serious enough to cause an accident but it makes you think the karma around that airport is not too good right now.