My understanding as a mere PPL is that there is a general speed limit of 250 kts below 10,000 to avoid doing too much damage if a bird strike occurs.
I recall seeing a TV programme once where turkeys were blasted at a windscreen by a cannon to demonstrate / validate this.
Have I got this right or has life moved on ?
What is birdstrike protection speed on a Q-400 belw 14 K ? and do other aeroplanes have their own specified limits ?