I didn't find that... the only hawk attack I have had was to my big fat australorp. He just killed her and couldn't carry her off so I went an shooed it away. Fortunately I haven't had any issues sinceok so call me crazy but I have heard and seen videos of people saying that hawks don't like to attack all black australorps because the number one enemy of a hawk is a crow. So the hawk sees the all black bird and thinks its a crow and leaves the flock alone. Any truth to that or just BS