Field Notes · Catnum 240028 · score 31 — high uncertainty
May 28 8:43 a.m. one cold egg warm cold egg. 3 young in hatchery badly seen to 16:58 check next 18 good bro - CB marked #7. 5/30 7:36 a.m. 3 eggs (one nest). 5/31 8:23 a.m. 4 warm eggs CB central. June 1 10:24 a.m. 3 eggs. 0 warm no bruises. [23.36 x 17.59 SIBLEY'S]. June 2 7:55 a.m. same warm no bruises CBT. 6/3 9:21 a.m. same warm no bruises CBT. 6/4 5:11 p.m. same warm no bruises. 6/7 1:30 a.m. same warm (dry shade) no bruises. 6/9 1:01 p.m. same warm no bruises. 6/11 8:27 a.m. same warm no bruises. 6/13 8:23 a.m. 2 babies doing dawn. 0 egg no bruise egg not popped but when shaken it feels like it has a chick. CB flown from nest area I removed 0.
Metadata · Catnum 240028
Date31 May 1969
LocalityNew Haven, Connecticut, USA
CollectorRothstein, Steve
Eggs in Set4
Specimen TypeE
Incubationunknown
Identificationunknown
HeaderCatbird
Further Details69-279
✦ Anecdote
This record documents an unusual extended observation period of nearly three weeks, showing the complete progression from eggs through hatching, with detailed daily monitoring and eventual removal of unhatched eggs containing developed embryos.