I will suggest possibility your young Coopers Hawk is not there for your poultry, rather it is after smaller birds that are coming in after your feed. My place crawls with Coopers but they no longer go after my chickens and sadly not my darn duck either. They are going after the song birds that forage among pens and seek cover in nearby plants when hawks visit. Chickens get all excited none the less and would attack hawk if it got down to their level. I also have Great Horned Owls and Barred Owls visited rather frequently with former not passing up opportunity to go after chickens although success rate on those is very low. The frequent owl visits are more to take advantage of the native rats which are likely taken with almost every visit. The chickens are simply targets of opportunity in areas where an easier meal is more reliably found. If I could lower song bird and rat abundance, the raptor visits would also go down.
