CSOM and Managed Metadata Field

I'm trying to use the Client Side Object Model of SharePoint 2013 to read a managed meta data field but I get null results

When I look in the Site Columns, there are 5 fields in the "GroupName" column group that should be returned:

• 1 single line of text field
• 4 managed metadata fields

I'm using this C# to get the columns in the group:

private void StackDemo(){ string contextUrl = "http://mysitecollection/sites/mysite"; string columnGroup = "GroupName"; var ctx = new ClientContext(contextUrl) { Credentials = CredentialCache.DefaultCredentials }; var query = ctx.LoadQuery(from x in ctx.Web.Fields where x.Group== columnGroup select x); ctx.ExecuteQuery(); return query.FirstOrDefault(); } 

When I view the query results I can view the plain text field, but all the other fields are null (see screenshot)

The weird thing is there is a result for each metadata field, but the value is null.

I want to

1. Know why I'm getting nulls, even though the query is returning 5 items as expected

2. Get the field's internal names of the managed metadata columns