What are these white round seeds?

[mopalia]

Split, they have the color of a popcorn seed

Soybeans

 

[Wolf River]

Chickens won't eat them. I can see why, they are too big to gulp down

I see whole kernel corn and yes those round little balls are soybeans. Go on Ebay and buy a small roller mill. Im a retired dairy farmer so l kinda have seed knowledge. I run all my scratch grains thru a roller mill.

 

[chooki]

What is the most prevalent field pea for livestock in your area?

This is the feed I buy for my chickens:

It's very similar to yours, except my free range birds don't eat the pellets, so I usually get the version with all grains instead.

When I answered 'dun pea' the first time, it's because that's the ones in my case, but then I realised that dun pea is probably an Australian thing.

If the supplier has not specifically remarked it's a particular kind of pea (because it's pricey but highly nutritious), I would assume it's the most available field pea for livestock in your area for that period being.

BTW, My hens don't like dun peas too.