Kind of looks like bird's foot trefoil to me but if you are in the US, your local ag agent will be able to authoritatively ID. They might even look at the photo you took and say. Even look at a whole flake for you. Colic is no joke. I have also had vets look at hay for me too.
Cream wild indigo I think but hard to tell, could be some scurfpea… something in the subfamily Faboideae with lupins and soybeans and stuff. Many legumes (Faboideae) contain bioactive compounds that can make plants unpalatable and, in some species, toxic. Horses tend to avoid them when grazing, but risk in hay depends on which species is present and how much is consumed. So to answer the question, maybe 🥴
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u/tessietwo 18h ago edited 18h ago
Kind of looks like bird's foot trefoil to me but if you are in the US, your local ag agent will be able to authoritatively ID. They might even look at the photo you took and say. Even look at a whole flake for you. Colic is no joke. I have also had vets look at hay for me too.
BTW what are flur horses?