Field Notes · Catnum 240017 · score 21 — high uncertainty
May 28, 11:17 AM: 4 eggs in nest 13' SSW facing along stream at SE corner of field complex. CB 5/29, 9:52 AM: CB on nest I (climbed tree - mega ants on tree) empty 11:37 AM same 2:40 PM same. 5/30, 9:28 AM: one cold egg CB on nest flew off did watched me silently to 6:56 AM one (c) cold no bruises [23.50 x 17.58 SIBLEY]. 5/31, 9:47 AM: one egg cold and (c) gone. June 1, 11:57 AM: one egg (c) warm 24.22 x 17.21 egg saved for experiments. 6/2, 12:19 AM: 26 cold and wet no bruises. 6/13, 11:36 AM: 26 cold and wet no bruises. 6/15, 10:03 AM: 26 cold several blue.
Metadata · Catnum 240017
Date30 May 1969
LocalityNew Haven, Connecticut, USA
CollectorRothstein, Steve
Eggs in Set3
Specimen TypeE
Incubationfresh
Identificationbird on nest
Nest Height3.96 m (13 feet)
Nest Supporttree
Near Waternear water
Nest SettingSSW facing along stream at SE corner of field complex
Nest NotesNest faced SSW along stream. Observer climbed tree with mega ants. Eggs gradually disappeared over time - started with 4 eggs, then down to 1 egg by May 31, with final egg saved for experiments. One egg measured 23.50 x 17.58 mm, another 24.22 x 17.21 mm.
HeaderCatbird
Further Details240.017 | 69-275
✦ Anecdote
This record documents a systematic study where eggs gradually disappeared from the nest over time, with detailed measurements taken and one egg deliberately saved for experiments.