Field Notes · Catnum 165829 · score 4 — moderate uncertainty
Nest placed on horizontal flange 3 inches wide of a sign which I guided on railroad bridge, 20 feet from the ground and within a foot of and under a railroad track. Railroad used daily. Guider painted black. Six feet distant was an empty Robin's nest in similar site on this bridge. Compactly built nest, well cupped, large, made of grass stems and blades, weed stems and mud, lined thickly with soft dry grass blades.
Metadata · Catnum 165829
Date05 May 1924
LocalityEnfield, Montgomery, Pennsylvania, USA
Coordinates40.073983, -75.1975107 ↗ map
CollectorMiller, Richard F.
Eggs in Set4
Specimen TypeE
Incubationfresh
Identificationpositive (transcribed as “positive. No hidesight.”)
Nest Height6.1 m (20 feet)
Nest Supporthorizontal flange of railroad bridge sign
Nest Materialsgrass stems and blades, weed stems, mud
Nest Liningsoft dry grass blades
Nest Settingrailroad bridge
Nest NotesNest placed on 3-inch wide flange of sign which collector guided on railroad bridge, within a foot of and under railroad track used daily. Guider painted black. Six feet distant was an empty Robin's nest in similar site on this bridge. Compactly built nest, well cupped, large.
HeaderOOLOGICAL COLLECTION OF RICHARD F. MILLER, PHILADELPHIA, PA.
Further Details761 | 209
✦ Anecdote
This robin nested directly on an active railroad bridge within a foot of the tracks that were used daily, showing remarkable tolerance for disturbance and vibration.