Field Notes · Catnum 135671 · score 5 — moderate uncertainty
10 ft. up on sleeper under water main in gulch. Composed of weed and grass stems, with thick mud walls and bottoms lined thickly with soft grass. Well built, deeply cupped and compact.
Metadata · Catnum 135671
Date22 May 1903
LocalityWissinoming, Philadelphia, Pennsylvania, USA
Coordinates40.022089, -75.063782 ↗ map
CollectorMiller, Richard F.
Eggs in Set3
Specimen Typee
Incubationslight
Identificationbird seen (transcribed as “female seen”)
Nest Height3.05 m (10 feet)
Nest Supportsleeper under water main
Nest Materialsweed stems, grass stems, mud
Nest Liningsoft grass
Nest Settinggulch
Nest NotesWell built, deeply cupped and compact with thick mud walls and bottom.
HeaderCollection of Richard F. Miller.
Further DetailsNo. 761 | No. 135,671 | 42
✦ Anecdote
This nest was built on urban infrastructure - a sleeper beam supporting a water main - showing the adaptability of American Robins to human-modified environments.