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A dataset of empirical and predicted wingspan measurements for 10,618 flighted bird species, representing approximately 97% of all extant species. It was created by Michael Fox and accompanies a 2026 manuscript on estimating wingspan from wing length. The data combines empirical measurements for 1,442 species from three ornithological sources with predictions generated from order-level regression models.
Data is provided in XLSX format, requiring software that can read Excel files.