Hiya Ff
My OH has just hatched some GF - after doing a fair amount of research, which says -
They can fly well, they need their own house (with high perching) & there's over 30 different colours & 2 types of strains - 1 for meat . They can be reared & kept on the same food as chickens though.
It's also better to get them as keets or hatch your own if you want them to be "tame" (never as much as chickens though). They are also monogamous & prefer to be kept in pairs.
They are also VERY noisy - like little alarms & will soon let you know if there's a strange animal (Mr Reynard for example) about - so you may need to sweet-talk the neighbours before getting any