1) Harris is most forgiving bird to learn with but people often upgrade from them after a season very unfair on the poor old harris
2) Not too hard to keep them but very hard to do them justice in terms of time
3) Weathering/Avairy, Telemetry, Travel box/cadge, Glove, Bow perch, Food, Bath, leather/Jess, swivel, leash and time All these things vary in price depending on how and what you use where you buy etc.
4)Harris take rabbits pigeons and anything else they can get hold of but in open flight are usually a little slow for taking feather Falcon maybe a better choice for crow and pigeon so