Well put toadbriar!
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
I just want to chime in to say that none of my boys have exhibited any sort of human aggressive behavior, so I don't consider it normal at all. The one who was rough on his girls was still fine with people. (But he went to the pot too, when he started chasing his 'favorite' girls off their nests to jump them... while a crowd of other girls were begging for his attention.)
There's always a drake surplus in the world, and lots of them are sweet tempered guys, who don't chase and bite. You really have the privilege to choose a fantastic drake, and it's a good thing because he'll father the entirety of your next generation. You can squeeze in a wonky hen here and there, but your boy mates everyone and really ought to be stellar.
What's especially obnoxious is that your guy doesn't have any other males around to ramp up his defensiveness. He's got a Hugh Hefner thing going on over there! He should be sitting pretty, not biting the hand that feeds him. Even when my boys were in the midst of testosterone madness, they were wrestling each other, not me!
NOT telling you what to do - just offering a perspective. It's nice when the flock reaches equilibrium, but it takes some doing to get there.