Are these choke cherries ?

My dad has a couple of these trees growing in his field, they are about 5-6 feet tall with berries growing on them. Any help in ID will be appreciated.

 

Looks like it. Prunus virginiana

 

Thanks for the reply. I'm a little confused, Are they good to eat ? I did a search and some sites say yes, others say they are poisonous.

 

"The fruit of common chokeberry is used for making jams, jellies, pies, sauces, and wines" Dirr.

 

They are edible raw, though astringent. In these parts, they're mainly used for jelly (not jam; the whole fruit is cooked then pressed through a strainer to remove the small pits*, hence the result is jelly)... chokecherry syrup is also nice on pancakes...

*Edit: "which results in fruit juice"...yes.

 

In jelly, the fruit comes in the form of fruit juice.
In jam, the fruit comes in the form of fruit pulp or crushed fruit (and is less stiff than jelly as a result).
In preserves, the fruit comes in the form of chunks in a syrup or a jam.

 

Thanks everyone for the information, it is most helpful