POULTRY -- TOXIC VS NON-TOXIC PLANTS
Hope above poultry link is of interest.
Nightshade tomato vines/leaves are considered toxic to us humans, toxic to almost all insects/bugs, and animals/pets -- however, my 10-yr-old Silkie has been ingesting tomato leaves every year from my garden beds and is still alive.
Silkie pullet (left) eating tomato leaves - 10-yr-old Silkie (right) still alive and well.
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I guess free-ranging chickens know just how much they can tolerate ingesting toxic vegetation. However, chickens love greenery so they have to have an assortment of greenery to pick and choose from because they will consume all toxic plants if there's nothing else to forage. Use common sense in providing chickens access to a variety of produce/greens. I choose not to provide cruciferous plants or soy because I once read it interferes w/ reproduction (egg laying) -- don't know how true that is so I just choose not to provide it to my girls. There's plenty other produce to offer them.
Smiles