Mature berries. Note the glossy bright red colour. The berries are poisonous.
Berries just starting to grow. Note the thin stalks.
Just to confuse identification of this plant, Red Baneberry berries are sometimes white!
The way to tell them apart from White Baneberry (Actaea pachypoda), is that Red Baneberry berries are on thin stalks and have a tiny dot at the end of each berry. White Baneberry (Actaea pachypoda) berries are held on thick stalks, and usually have a large conspicuous dot at the end of each berry.