Field Notes · Catnum 240533 · score 17 — high uncertainty
Found 20. 4:40 pm 2'6" up in dead shrub, dead rose and some other vine 4 eggs warm. CB II in willow clump adjacent to parking lot, is 25' W, 5 E end parking lot. 6/21, 8:43 am 4 eggs C on nest I. 2:31 pm 3 eggs + C from nest II-II another CB II [2194 X 16.27 slender embryo and network of blood vessels more seen.] 6/22. 10:38 am 3 eggs warm O gone 2 CB II-III
Metadata · Catnum 240533
Date21 Jun 1970
LocalityDelta, Manitoba, Canada
CollectorRothstein, Steve
Eggs in Set4
Specimen TypeE
Incubationcommenced
Identificationbird on nest
Nest Height0.76 m (2.5 feet)
Nest Supportdead shrub
Nest Materialsdead rose, vine
Nest Settingwillow clump adjacent to parking lot
Nest NotesTwo different nests (CB II) tracked over multiple days. First nest found with 4 warm eggs, second nest also monitored. Embryo development and blood vessel network observed in one egg.
HeaderFill Station
Further Details70-80
✦ Anecdote
This record documents simultaneous monitoring of two different Gray Catbird nests (CB II) over several days, with detailed embryological observations including blood vessel development in one of the eggs.