Welsumer. Hen or roo, help :)

[Pigeony]

In case anyone wanted to se more, I will have to get rid of all the beautiful roosters, my first Bach. And I spoke to the breeder and he says welsumer do lay white eggs because it’s a mix race. Can that be true?

Wow 5 cockerels and one pullet in these pictures, that's a real bummer. Welsummers are not a mix, they could be part Welsummer but they're not true Welsummers for sure.