This record is marked as 'Abnormal' in the header and the identification is listed as 'Ruin', suggesting the nest was destroyed or damaged in some way that made it unsuitable for normal study.
I know this collection — 1078 AMRO egg sets, 1851–2013. Ask me about collectors, nesting habits, localities, incubation stages, or anything about Turdus migratorius biology.
Try: "Who collected the most records?" · "What materials are most common in nests?" ·
"Tell me about nests near streams" ·