A page for each subspecies is forthcoming, as is better styling.
There is a Google Sheet of subspecies information, here: The List of Subspecies.
These birds do not have subspecies.
These birds get a free pass. They're not monotypic, but you can't identify them to subspecies easily in the field, or on eBird. If a subspecies name is identified, it is because that is the probably subspecies deduced for Vermont.