Although I agree that every bird is different, however I had a terrible experience with 2 of the Wyandottes (1SLW and 1GLW) myself. When I got them, they were 13 weeks old and were very skittish. It took me 3 months to integrate them with my existing birds who were 22 weeks at that point. They would just run around and create a ruckus at the slightest movement of another bird towards them (even without being pecked), so that would disturb my elder flock who would then go after them. Thank god it got cold and what I could accomplish in 3 months, the weather made them sleep with the elder birds. Just to make a point, I had also gotten an Australorp with them, that was from the same flock they were and she was fine within 4 weeks.
Now comes the other end of the stick. Once they integrated, 4 months later, I introduced 2 new birds, a RIR and a Leghorn mix. After the initial confrontations, the RIR won over the Wyandottes and they never bothered her again but the Leghorn mix lost. Since that point they made her life miserable. She was chased in the coop to the run to the other coop and even free-ranging. I would let everyone free range but the Leghorn would stay inside because of fear. The SLW made it the purpose of her life to go back into the coop and chase her out. Would not let her lay eggs in piece either. After 5 months of this behavior, I just gave up and dropped them off at a feed store. I only got them because I heard they frequently go broody and also because they are pretty but they did not go broody & compared to my red stars who laid an egg every day, they only laid 5 a week. Next time I will only get Wyandottes as baby chicks, hopefully frequent handling as babies will change their innate behavior somewhat.
