A system for encoding bird field notes

This method generates a sequence of the contained DayNotes instances. It takes no arguments. The generated instances may not be in any predictable order. See Section 9, “class DayNotes: Notes for one day”.

There may be multiple DayNotes instances for the same date and state. For example, when performing censuses such as the Christmas Bird Count and North American Migration Count, the author prefers to keep census records in one day-notes element, separating into another day-notes element casual observations not made within the census methodology.