Ross said:

Over the winter, we had an attack of Rabbits eating bark off our
blackberries. Will it kill them? Should we do something to help them
recover?

The rabbits have likely done in many of this year's fruiting canes. I had this
happen to my raspberries one winter. (Wiped out the summer crop.)

Lots of snow cover this year in many places = more rabbit damage to woody plants

--
Pat in Plymouth MI ('someplace.net' is comcast)

Any technology distinguishable from magic is insufficiently advanced.
(attributed to Don Marti)