Reviewers have tagged some eBird checklists as "list-building"; these show this message at the top:
List-building checklist. This checklist has been flagged as a personal list-building checklist. eBird requires a specific date and location to be used in public output. This checklist and its observations do not appear in public eBird outputs. More information.
Many eBirders enter a "baseline life list" to get their eBird statistics up to date. These lists are not scientific submissions, are not meant to be shared with others, and are solely for personal use.
The best practices for these lists are to submit them for 1 January 1900, which is a date exclusively reserved for these submissions and lists from this date are automatically identified as List-building. In addition, eBird reviewers may sometimes encounter lists that represent a list-building effort but do not use the 1 January 1900 date and do not follow the best practices (see Upload Your Life List). These lists are also tagged as "List-building" and are not shown publicly.
Checklists that do not appear in public eBird output are also not used for science. To learn more please see our Public and Non-public Checklists for more information on how checklists are displayed and how to Upload Your Life List to understand how best to upload your life list.