My duck is biting

[Rstu]

I have two muscovies, both of whom are broody. One is nice, she pulls all the eggs, even the chicken eggs, under her and lays on them. However, the other one sits on eggs and she bites you if you try and take them. It's quite ferocious. I'm worried that this might be a permanent issue. And help as to why this is happening would be appreciated. Thanks.

 

[sourland]

She is protecting her nest - normal behavior. She will probably be an excellent mother.