Fruit Identification

Here’s some fruit I spotted today while walking along the riverbank.  They’re very pretty, but I don’t know what they are.  Can you help?

These orange beauties were on a shrub about 5-7 ft high.

These black berries were on a tall shrub about 8-10 ft high.  They have 2-3 seeds in each berry – not a single pit like a chokecherry.

Update, Dec 21, 2011: I believe this shrub may be “Buckthorn Rhamnus Cathartica”.  While it is pretty in winter time and may provide birds with nourishment, it won’t be a fruit harvested by Fruit Share – since it’s poisonous.  It is also on Manitoba’s invasive species hit list – .  

What do you think they are?