Please breed and sex of this?

[NatJ]

I am no expert but was thinking white leghorn.

White Leghorns have white feathers.

Sorry, I meant to say Brown leghorn

Brown Leghorns have brown feathers, usually with several shades of gold/brown/red and some amount of black as well.

The chicken in the photo looks to have black feathers all over. That would mean it is a black chicken. I can't say what breed (Leghorn, Minorca, Australorp, Jersey Giant, etc.), but I am confident it is black and not white or brown.

Thanks.
She passed. Too old. Too many was unknown.

That sounds like a good decision in this situation.