Well said ITCZ.
t is not safe to operate above 250 knots below 10,000 feet. If you do, you are rolling the dice.
Surely depends on the aeroplane? We have a bird speed restriction of 313kts below 8,000ft in the 757 and 767. Rumours are that speed only applies to one type but is used on both for commonality. It can't be THAT dangerous as there aren't loads of crashes happening because of birdstrikes on aircraft faster than 250 knots below 10,000ft. And why 250 knots? Why not 270 or 210 or 237? It seems convenient that the ATC speed restriction is the same as the "safe bird speed limit"?