Is ornamental sweet potato vine poisonous to chickens?

[Jenny Loves Chickies]

I’ve read so many conflicting reports, I think that some varieties might be poisonous? The ornamental variety that you grow in containers and trails beautiful purple or bright green foliage is the one I’m curious about. Would love to know!!

 

[Feathers Brady]

There is a thread called " plants poisonus to chickens" that may help.
Just type in the search bar.