Field Notes · Catnum 221699 · score 4 — moderate uncertainty
Bird common; frequent woody, stream bottoms. Nesting season April 5 to June 25 - with exception of Bluebird - the longest nesting season of any species in Oklahoma. Eggs - very typical - notice one egg slightly different from others. This seems to be almost a constant gravity in this species. Nest: Placed 8' above ground in small elm growing in ravine. Made of grasses, bark and paper - lining of rootlets.
Metadata · Catnum 221699
Date15 Jun 1919
LocalityTulsa, Oklahoma, USA
CollectorPemberton, John R.
Eggs in Set3
Specimen Typec
Incubationcommenced
Identificationbird on nest
Nest Height2.44 m (8 feet)
Nest Supportsmall elm
Nest Materialsgrasses, bark, paper
Nest Liningrootlets
Near Waternear water
Nest Settingravine
Nest NotesGrowing in ravine. Bird common; frequent woody, stream bottoms. Nesting season April 5 to June 25 - with exception of Bluebird - the longest nesting season of any species in Oklahoma. Eggs - very typical - notice one egg slightly different from others. This seems to be almost a constant gravity in this species.
Further DetailsNo. 221,699 | 980
✦ Anecdote
The collector noted that one egg was slightly different from the others and described this as 'almost a constant gravity' in Northern Cardinals, suggesting a pattern of egg variation within clutches that was regularly observed.