The Regional/Square Summary Sheet will provide you with a summary of the effort and data from the first Atlas (1981-1985) for the square. It also displays the migration and breeding dates.
The Square Coverage Summary Sheet will provide you with an assessment of the coverage of the square during the second Atlas (2001-2005), with breeding evidence data from both atlases.
Enter a square number and click "View Sheets". Please note that you must use Atlas square numbers from the second Atlas (2001-2005).