Second rule was not working properly, it now flocks better. Still working on the inertia problem. Thanks for all the comments.
The Boid Flocking Rule is a model for simulating flocking (wandering) with a group of things. It was developed by Craig Reynolds. It relies on 3 simple rules and all the motion you see is derived from these.
Actually, that is a lie, I used a 4th rule so that they roughly head for your creature, or otherwise they eventually fly off screen!.
I know the game isn't very enjoyable as a game as such, I meant it more as a demonstration tool. The link I gave is the website that I used to develop my Boids.
In the game, you control the red Boid and you must dodge the white Boids. The Boid does not stick to your mouse, only follow it.
Enjoy! If you have any questions about Boids etc., please leave a comment.