Yes. I have seen this happen here when visitors came wearing bright pink, red and neon orange clothing or clothing with bold patterns.My question is this...could the color I was wearing either time have set him off? I was wearing a bright pink shirt.
But no matter what triggered him, once he attacks his humans an important boundary is lost and he can do so again any time.
Don't let your grandkid even near the chicken run, some roosters just fly over the fence to attack.
Please, don't ever pass an aggressive rooster on to someone else.
I would invite him for dinner