Marin County Breeding Bird Atlas Incidental Observation Form


    • Record ‘specific codes’ (see below) or code B.
    • Standard effort: 15 min. / .5 km per entry.
    • For more extensive surveys, use Field Card.
  • MM slash DD slash YYYY
  • :
    T Territorial behavior, singing 7+ NB Nest building at actual nest site
    D Displays: courtship, copulation, etc. DD Distraction display
    V Visiting probable nest site NU Nest recently used
    N Nest of wren, woodpecker, corvid, or plover FY Fledged young
        AE Adult entering nest site
        FS Fecal sac
        CF Carrying food
        NE Nest with eggs
        NY Nest with young