For some time I suspected my birds consumed the yellow fruit that looks like a smaller variety of cherry tomato. Yesterday I busted the birds in the act when moving pens over fresh grass. A given bird might consume what appears to be a handfull of berries. I have always assumed the berries are poisonus at least to humans. A month ago the chickens would not eat them but now they pound them down before consuming other greens. My guess is either not all types of nighshade are equally toxic or a hard freeze renders the fruit edible. Something must consume the fruit naturally otherwise there is no since in creating them. I will be watching for ill effects.