Okay, 2 more questions...
1. What if the birds were in a huge helicopter, flying with its doors open (assuming the birds don't get sucked out or fly away)?
2. One that's also created a few discussions, An aircraft has lost its tail and is a vertical dive (terminal velocity?) and the pilot is climbing up the side of the fuselage to bail out through the tail. Is the effort required by the pilot to climb up the same as it would be if the aircraft was simply on the ground, standing on its nose? Run Amock...