Christina Websell writes

To answer your question about yew berries (which got lost in the thread)
No, they are horribly poisonous to humans, some birds can eat them safely
but if I have a 2 gallon bucket full of yew berries I wouldn't be wanting to
make wine out of them, unless I was suicidal.

The seeds are poisonous, but not as I understand it the red aril.
Nevertheless, I would not recommend you to eat them.
--
Kay