What is a Season Summary sheet?
  • A Season Summary (click link to see an example and also see example below)
    reports a set of important nesting statistics that indicate the reproductive
    success of the Tree Swallows at your project that year.  
  • It can also include a narrative or list of situations or events that season that may
    have influenced nesting and should be recorded for future reference.  
  • Obviously, Season Summaries are compiled after the season is completed.

The Season Summary sheet offered here includes the following fields:
  • Boxes and Nesting Attempts:
          Number of boxes available
          Number of Boxes Used
          Percent of Boxes Used
          Number of Nesting Attempts (boxes may have more than one)
  • Eggs:
          First egg date at the project
          Number laid
          Average clutch size
          Clutch Range (from lowest number to highest number of eggs
          Clutch Mode (most common number of eggs)
  • Nestlings:
          Total number of eggs that hatched
          Percent of eggs that hatched
          Causes of egg mortality (takeovers, thrown out, broken, unknown)
          Average brood size (young per nest at hatch)
          Brood Range at hatch (from lowest to highest number of young)
          Brood Mode at hatch (most common number of young)
          Number of living nestlings on day 12
          Average brood at day 12
          Brood Range at day 12
          Brood Mode at day 12
  • Fledging:
          Number of nestlings that fledged
          Percent of eggs laid that fledged
          Percent of nestlings hatched that fledged
          Causes of nestling mortality when known
  • Weather Factors:  
          Brief summary of weather trends during nesting.
  • Other/Remarks:  Whatever else you want to add regarding the season.  This
    could be unusual events or behaviors, different things you tried to improve the
    project, issues you explored or dealt with, etc.

Learn About Birds at Tree Swallow Nest Box Projects
Season Summary