Field Notes · Catnum 240527 · score 20 — high uncertainty
M. march N. & holds 5 eggs. C. Bon nest 4 eggs. 10:58 AM. 4 warm eggs. C. Bon came to nest H. 5' up on southeast side of thicket opposite Robinson Rd. Begin. 3:55 PM. 3 warm eggs (young). C. Bon nest I. [23.87 x 17.44] large embryo preserved.
Metadata · Catnum 240527
Date24 Jun 1968
LocalityCheboygan, Michigan, USA
CollectorRothstein, Steve
Eggs in Set4
Specimen TypeE
Incubationadvanced
Identificationunknown
Nest Height1.52 m (5 feet)
Nest Supportthicket
Nest Settingthicket opposite Robinson Rd
Nest NotesMultiple nests observed (N, I, and another with 4 eggs). Southeast side of thicket. Large embryo preserved from one egg measuring 23.87 x 17.44.
HeaderCatbird
Further Details68-300
✦ Anecdote
This record documents multiple Gray Catbird nests being monitored simultaneously, with detailed timing observations and embryo preservation, suggesting systematic breeding biology research rather than routine egg collecting.