Field Notes · Catnum 240537 · score 18 — high uncertainty
F. Lake Wobol June 21, 10:25 AM 6 feet up in willow 40 feet from lake, tree due north, nest (1 on it) - 4 eggs CB on nest II. 6/22 - 11:34 AM 3 eggs no bruises CB on nest II. 6/23 8:37 AM same no bruises CB (possibly 2 CB). 6/24 3:32 PM same no bruises CB on nest II. 6/26 9:26 AM 3 eggs gone CB II.
Metadata · Catnum 240537
Date21 Jun 1970
LocalityDelta, Manitoba, Canada
CollectorRothstein, Steve
Eggs in Set4
Specimen TypeE
Incubationunknown
Identificationbird on nest
Nest Height1.83 m (6 feet)
Nest Supportwillow
Near Waternear water
Nest NotesLocated 40 feet from lake, tree due north. Observations tracked over multiple days with catbird consistently on nest. Three eggs disappeared by June 26th.
Further Details70-84
✦ Anecdote
This record documents the mysterious disappearance of eggs over the observation period, with the clutch reducing from 4 to 3 eggs initially, then all 3 eggs vanishing by the final observation on June 26th.