Field Notes · Catnum 165828 · score 4 — moderate uncertainty
On a steel road bridge spanning deep railroad cut (Willow Grove avenue bridge across the Fort Washington branch of the P.R.R.); about 30 ft. from the ground (track) and 6 yards from the floor, placed upon a flat flange 8 inches wide of a large I girder. Compactly made of weed stuffs, grasses and mud, and lined thickly with dry soft fine grasses; deeply cupped of average size.
Metadata · Catnum 165828
Date19 Apr 1921
LocalityLaverock, Montgomery, Pennsylvania, USA
Coordinates40.095, -75.18139 ↗ map
CollectorMiller, Richard F.
Eggs in Set3
Specimen TypeE
Incubationslight
Identificationbird on nest (transcribed as “saw female on nest”)
Nest Height9.14 m (30 feet)
Nest Supportflat flange of large I girder on steel road bridge
Nest Materialsweed stuffs, grasses, mud
Nest Liningdry soft fine grasses
Nest Settingsteel road bridge spanning deep railroad cut
Nest NotesNest placed upon a flat flange 8 inches wide of a large I girder on Willow Grove avenue bridge across the Fort Washington branch of the P.R.R., about 6 yards from the floor. Compactly made and deeply cupped of average size.
HeaderOological Collection of Richard F. Miller, Philadelphia, Pa.
Further Details761 | 252
✦ Anecdote
This nest was built in an extremely unusual location - on the steel girder of a railroad bridge 30 feet above the tracks, demonstrating remarkable adaptability of American Robins to urban infrastructure.