Somehow I'd guess 3/4 of this lot could not manage an idle descent from altitude to save their lives without furiously typing requests to the VNAV gods.
As for the high speed at lower altitudes, it depends. My need-for-speed is tempered by the pics of one of our 767-300's that took multiple bird strikes >10K out of CDG. I believe the speed was north of 340KTS. The jet looked like it took more than a few rounds of 20MM cannon hits along with a bloody carcass that punched through the left forward cockpit pressure bulkhead and ending up splattering over the Captain's flight bag.
4-5 lbs birds, but my memory is a little weak on actual size. Choose wisely, Tweety doesn't have TCAS.
