What lovely looking hens. I'm not sure on the breeds or genders but that seems to have already been covered. Do you already have any chickens? If so a period of about 4 weeks quarantine is recommended to observe for any signs of illness. If not you should still keep an eye on them which I'm sure you will. I'm not sure you can get it in Greece but I give mine something called battles poultry tonic that helps with feather loss and increased appetite. They do look nice and I especially like the polish.