We are thinking of adding some guineas to our hobby farm. I have a couple of questions.. Are they nice to chickens? Can they live with chickens? Good with people? Easy to care for? Personality? Are there different breeds of guineas or just different varieties? Lifespan? Some people say they ward off small predators (for chickens).. ? And others say they are good snake control? Also any advice..tips..input.. etc. are GREATLY appreciated! I want to learn as much as possible about them if we decide to get a couple. Thanks in advance!!