To join ND-Birds, go to the following web page:
select the "join or leave the list" option.
You will get an automated response from the listserv computer instructing you to confirm your membership in the group.
When you have confirmed, you will receive a more detailed list of instructions in how to participate.
(how to temporarily stop the messages from the group while you are on vacation, how to find out who else is on the list, etc).