Field Notes · Catnum 240535 · score 28 — high uncertainty
June 22 7:16 pm 4 in on willow at south end/lawn at lodge 18 inches west, probably 5 eggs. CBII 6/23 8:40 am 5 eggs, 5:40 pm 4 eggs. 6/24 20 x 18.67 white else (probably crystal clear) yolk yellow. 6/24 8:52 am sand no bruises warm CBII. 6/25 9:04 am M some no bruises warm CB on wet II another CBII. 6/26 8:50 am some warm no bruise CBII. 6/27 c. 8:25 am some warm no bruise CBII. 6/28 10:08 am some warm CBII no bruise. 6/29 8:41 am some warm CBII no bruise. 6/30 9:20 am sand warm dry CBII no bruise. July 1 9:54 am sand warm no bruise CB on wet II. July 2 c. 4:15 pm some CBII. 7/3 10:20 am some warm no bruise CBII. 7/4 10:13 am 3 young + egg no bruise 2 CBII. 7/5 7:15 am 4 young + no bruise removed 2 CBII.
Metadata · Catnum 240535
Date23 Jun 1970
LocalityDelta, Manitoba, Canada
CollectorRothstein, Steve
Eggs in Set5
Specimen TypeE
Incubationunknown
Identificationunknown
Nest Height0.46 m (18 inches)
Nest Supportwillow
Nest Settingsouth end/lawn at lodge
Nest NotesDaily monitoring from June 22-July 5 with detailed observations of egg condition, temperature, and development. Nest initially contained 5 eggs, reduced to 4 by June 23. Eggs measured 20 x 18.67 mm, described as white with yellow yolk. Adult bird (CB) observed on nest multiple times. By July 4, noted 3 young plus 1 egg, and by July 5, 4 young with 2 eggs removed.
Further Details240,535 | 70-97
✦ Anecdote
This record documents an exceptionally detailed daily monitoring regime over 14 days, tracking the complete nesting cycle from egg-laying through hatching, with precise timestamps and condition assessments recorded twice daily.