What are these white round seeds?

[Three Stents]

Just read here too(https://www.backyardchickens.com/articles/can-chickens-eat-peas-all-you-need-to-know.77165/), that dried peas are not good for chickens..glad they are not eating them

 

[Bsmac]

soybeans are oval shaped

Most varieties are some are round!

 

[ABQ chicken keeper]

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

The whitish peas look like the kind found in pigeon feed.

 

[GravityWaves]

Do you have a list if ingredients to choose from? That could help narrow it down a lot.

How big are those seeds? How big are your chickens? If you have bantams or very young chicks then they may not be able to handle larger sizes, but full sized fowl (Orpington, Rocks, Sussex, Australorp, and such) eat rocks the size of peas to use as grit. I've found plum pits (same size as peach pits) in my chickens' gizzards when I butcher them. People would be amazed at what they can swallow and grind up in their gizzard.

That's the downside of feeding them a whole grain type of feed where the parts are not ground together. They can pick and choose what they want to eat so they don't get as balanced a diet as the label says. That's fine if it is fed as a treat, keeping the amount a small part of all that they eat. But if that is a main feed their diet isn't quite as balanced as you might assume. They might eat them if you crack them.

To me, it is most likely they are not eating them because they do not want to, not because they can't.

https://starmilling.com/star-milling-incredible-lay-feed/

This appears to be OP's layer feed. Split-green, Austrian, and Canadian peas are listed. Probably Canadian, like @GreenJay mentioned above.

 

[Mother of Chaos]

Just read here too(https://www.backyardchickens.com/articles/can-chickens-eat-peas-all-you-need-to-know.77165/), that dried peas are not good for chickens..glad they are not eating them

Do you moisten your feed? I use a Kalmbach whole grain feed but serve is moistened rather than dry. They love green and yellow dried peas. Haven’t seen the white Canadian peas before.

 

[chooki]

They are dun peas.

 

[BigBlueHen53]

They are certainly capable of swallowing them if they want to, a chicken can easily gulp down a whole mouse, toad, frog or lizard. If they don't eat them it's because they don't want to, not because they can't.

 

[Perris]

they are white peas.

Pea nomenclature is variable, as is the nutritional profile of any given pea. But they can and do feature in poultry diets worldwide. See https://www.feedipedia.org/node/264 (tab 2, nutritional aspects):
"Poultry
Peas are a good source of protein and energy for poultry. However, they are deficient in sulfur-containing amino-acids and, while feed pea varieties containing low concentrations of anti-nutritional factors have been available for several decades, there is still a lot of variability in composition and nutritional factors, resulting in differences in digestibility (Nalle et al., 2011). When the nutritional value of field peas (raw or processed) is well defined, and when it is possible to balance the diet with synthetic amino acids, they can be included at high levels in broiler diets without negative effects on performance. Maximum recommended levels range from 20% (Nalle et al., 2011) to 30-35% (Farrell et al., 1999; Diaz et al., 2006) for broilers. For laying hens, similar inclusion rates are suggested (Perez-Maldonado et al., 1999). As a consequence, in industrial farming conditions, field peas can be used without maximum level (Lessire, unpublished).

Processing may improve starch digestibility, and heat treatments may alleviate the negative effects of some antinutritional factors. Among those treatments, pelleting, extrusion and cooking are frequently mentioned. Peas can be treated alone or mixed with other raw materials such as full fat oilseeds. Many experiments have been performed to assess individual pea varieties or to measure the effect of processing methods on metabolizable energy (ME) value, digestibility, poultry growth, laying rate and feed efficiency. For example, Grosjean et al., 1999 reported a large variation in nutritional value of peas determined on adult cockerels, and did not find a strong correlation with chemical composition. Peas with low ME values benefited the most from pelleting, which greatly increased their ME, starch digestibility and protein digestibility. After pelleting, starch digestibility (more than 98%) was found to be not far from that observed for cereal grains, though starch digestibility was lower for wrinkled peas (84%)."

I ferment mine with whole grains and other seeds, and rinse before serving; the pea smell is very obvious during the rinsing, and a lot of saponins and some other anti-digestive molecules are removed in the process. Fermenting also renders them easier to skin - the chickens do the skinning (which also lets the pea split into halves, which are also easier to eat) and leave the skins on the ground. Mine will eat blue, green, and white peas readily, but maple (brown peas) only if starving, so I choose blends with few if any maples in the mix.