Data for: Breeding synchrony and extrapair paternity in a species with alternative reproductive strategies

This excel file contains information about the levels of extrapair paternity found in clutches of a polymorphic species, the white-throated sparrow (Zonotrichia albicollis). Levels of breeding synchrony are given for each clutch (nesting attempt). Each line contains data on one nestling, and nestlings are grouped into clutches. Information about male characteristics, breeding density, number of territorial neighbors, date, and clutch number (e.g., first or second nesting attempt) is also provided. PercentW is the proportion of the population consisting of white morph (versus the alternative tan morph) males.