Rule No. 1: Don't hit them with your aircraft -- it makes a smelly mess and can do severe damage to your airplane if it comes through the canopy or windshield, it will give you a headache.
Fast Facts:
1. Peregrine Falcons have been clocked at 217mph in a dive. So if it passes you, just wave and let it go -- it is about to smack into some unsuspecting prey ahead and below you.
2. Guess who is the fastest in wing flapping flight? You got it! A Swift (real bird not an airplane) can do 105mph. Don't expect to do formation with one... they are not checked out in formation nor do they have a FAST (Formation and Safety Team) card.
3. The heaviest bird is a Great Bustard (no, that is not a misspell). Those suckers can go up to 40 lbs or more and if they are too heavy, they cannot take off. (Pretty much like an overloaded aircraft.) Under no circumstances hit one of those with your aircraft.
4. The largest bird -- the wandering albatross -- wingspan of 12 feet or more and they can glide for hours without beating their wings. They may even sleep while gliding (sounds like a few pilots I know...)
5. Smallest? Hummingbirds of course. They are also the international acrobatic champions, despite claims to the contrary of many National Acrobatic Teams. They can hover, fly backwards, inverted, sideways and anything else you can think of.
6. Altitude champion? Ruppell's vultue. Evidence: collision with an airliner at FL410.
Birds are VFR only (Visual Flight Rules). They are not trained or qualified on instruments but they do have a built in GPS that can get them from Alaska to New Zealand.
So there you have it -- all the useless information you can possibly need when flying in the realm of birds.