Field Notes · Catnum 103520 · score 3 — moderate uncertainty
1st egg in nest 6/7/20. One egg a runt. Collected by self. H.W. Carriger climbed for it. Locality: Alameda, Cal. 1st record available since mine of 1878 or 1879. Nest composed of herewith. Weak on one side account shape of crotch it leant against. Placed 10 to 11 ft. up in crotch formed by two limbs & one snag of small branch about ft. long. The runt egg infertile & light in color as a bluebird's.
Metadata · Catnum 103520
Date13 Jun 1920
LocalityAlameda, Alameda, CA, USA
Coordinates37.773545, -122.278268 ↗ map
CollectorCohen, D.A.
Eggs in Set4
Specimen Typee
Incubationcommenced (transcribed as “several days”)
Identificationpositive (transcribed as “unmistakable”)
Nest Height3.2 m (10 to 11 feet)
Nest Supportcrotch formed by two limbs and one snag of small branch
Nest NotesWeak on one side account shape of crotch it leant against. H.W. Carriger climbed for it. One egg a runt, infertile and light in color as a bluebird's.
HeaderCollection of D. A. Cohen, Alameda, Cal.
Further Detailsn/4 20
✦ Anecdote
This record documents what appears to be the collector's first American Robin nest find in Alameda in over 40 years, with one notably abnormal 'runt' egg that was infertile and unusually pale like a bluebird's egg.