Good article but I should point out that here in the Southeastern U. S. the most likely hawks to take your poultry are the Red Tail, Cooper's, Sharpshinned and Red Shouldered. All of these have been known to take poultry especially Red Tail and Cooper's. Black Vultures will on occasion take poultry if they get a chance. They will mob newborn calves and lambs. I have a couple of Cooper's in my area that are large enough to take poultry.
I realise that it's time consuming, but pictures of all of these raptors in flight might be helpful.
Falcons here (Spain) will make a dive for chicks and small juvenile chickens. Mostly they are unsuccessful but worth noting.
Otherwise a great idea for an article and well put together.
