| Nestbox ID Number | The number that's listed on the nestbox (if applicable) |
| Nest ID Number | Species code, nest number, year (i.e., WBNU-4-97 "4th White-Breasted Nuthatch nest for 1997") |
| Date/Description of Nest When Discovered | Enter date and description when you first discovered the nest |
| Location of Nest | Enter the location of where the nest was found |
| Date of First Egg | Enter date of the first egg. This date can be estimated. |
| Clutch Size | The number of eggs in the clutch |
| Hatching Date | Enter date eggs hatched |
| Brood Size | The number of nestlings that hatched |
| Fledging Date | The date fledglings left the nestbox |
| Failed Nest | Enter date and cause of nestbox failure |
| Comments | Weather conditions, predation information, egg and nest description, or any information relating to changing area conditions |