A single turkey is fine. We have one and she just chills. Haha. Likely though that's a BBB - brown breasted broad. Just a meat hybrid, they can get overweight easily. Turkeys, the meat ones at least, can be very social or can not be. We had some that loved each other and hung in a group, but we've also had some that just kinda mozy along looking for food, not caring. And they do great with chickens, the companionship will last for a long time, as turkeys can easily keep up with chickens, a big reason most companionships fail, that and waterfowl + poultry don't make the best friends (poultry being turkeys, chickens, guineas, etc)
It'll do fine on chicken food, but for faster growth game bird feed will suffice. Or if you want yogurt. But that likely wont add enough.
Our poults grow slow, but are healthy nonetheless, if you want it as a pet then chicken food will help it not get overweight so fast. If its a Tom you will HAVE to butcher. They just get too big, will end up breaking their legs from their weight. With BBBs telling hens from toms can be a pain since they don't get brilliant tails or beautiful feathers, but will be more aggressive and have a longer snood (the fleshy thing on its nose), and have more 'pimples' on its neck. Females won't get overweight so fast. Depending where you go it from, some tend to be very leggy and sleek, while other strands will be more square and plump. We've had both, and it might just be age, since in the first year (never kept turkeys past it) they're very leggy like yours, but we have a white BBB (BBW) and she's very square, unknown on age but is laying and has done so for 2 years.
Turkeys make great pets and highly addictive.
