Strange Things in The Vineyard

We have this little vineyard near our house.  In recent years we've been enjoying the grapes.  A neighbor even made some good wine with them a couple of years ago.  I'm no horticulture expert, not even the plants we have. 

So according to my very limited knowledge of grape vines, they dry up late summer, early winter. Then they look rather dead and pathetic until the spring, when small green leaves suddenly appear and much later on the grapes.

Recently, I've noticed this:

On the dry branches there aer suddenly young, bright green leaves.  Rather peculiar, isn't it?