Thanks Speedbird48 and lomopaseo for putting me straight on 250 kts and 10 K
So 250 isn't hard and fast but it's a matter of exercise more caution if lots are birds are expected .. play the odds.
Shame nobody spotted the geese before Sully got there.
Still interested to know what "birdstrike protection speed beliw 14,000 feet on the Q-400" means.
Maybe have to stroll round to Pier 1 and find a Flybe driver to ask.