Question
I notice many holes in the trunk of the tree starting at the base and winding upward as far as i can see.  Some are small d shape holes, but most are as large as a pencil and black, almost like bullet holes.  The leaves on the lower branches are brown and the tree isn't looking healthy.  It is early Sept in Ct where the tree is, and this just started a few weeks ago.  Is there something I can do to save the tree, or does it need to come down before the other birches are in the same state?   I have asked many local nurseries and have been told I need to find an arborist, but am having a lot of trouble locating one.

Answer
I would suggest you contact the CT. Department of Forestry and ask one of their Foresters to come out and look at the tree. With a first hand look they should be able to assist you. Their web contact page is below, contact the office closet to you.
http://www.ct.gov/dep/cwp/view.asp?a=2697&q=329934&depNav_GID=1631#Service