I always wonder how they differentiate the hawks. My girls always spot them before I do and run for cover. I’m always so impressed.Chickens are a lot more intelligent and observant than people give them credit for. They seem to always be watching you and looking at what you are doing. They know when you wear something out of the ordinary. They know if there’s a speck of something different on your arm, face, etc. I do not know how they can tell when I have a speck of brown paint on my arm that isn’t the usual freckle lol. They can remember up to 100 different faces of chickens, humans, and other animals. They know who our cats are, which dogs are ours (they like our cattle dog but not our shihtzu lol) and which people give treats. They also know the difference between hawks in the sky, vs crows and ravens. Not exactly sure if this is common knowledge but it’s just something that I’ve noticed.
A second thing that I want to mention is that bio security is a really important part of keeping chickens. Chickens are experts at hiding illnesses and you can bring in seemingly healthy birds and end up with an incurable, lifelong illness. If you are to bring in adult or juvenile chickens you should quarantine them (including chickens from friends or family’s flocks). I go as far as to not introducing any new chickens except day old chicks or hatching eggs from npip sources, I have read too many horror stories of people ending up with mg or something like that after introducing adult chickens. Illnesses can even be tracked in from feed stores, swaps, and poultry shows on your shoes, clothing, etc. I keep a separate pair of shoes for my chicken yard. There’s many articles for people to learn more about bio security and the measures you can take!