Correction factors for estimating the total breeding female population at five different sites (the Channel Islands site is three colonies combined).

• Main Authors: Richard Condit (114548), Sarah G. Allen (11993642), Daniel P. Costa (7359032), Sarah Codde (11993645), P. Dawn Goley (11993648), Burney J. Le Boeuf (11993651), Mark S. Lowry (11993654), Patricia Morris (11993657)
• Format: Dataset
• Language: unknown
• Published: 2022
• Subjects: Evolutionary Biology; Ecology; Inorganic Chemistry; Environmental Sciences not elsewhere classified; Biological Sciences not elsewhere classified; particularly colonial birds; yield total population; total population size; produce population estimates; single count throughout; one count captures; female population size; several additional colonies; northern elephant seals; asynchronous breeding phenology; estimating population size; years within sites; many seasonal species; female count; many years; elephant seals; entire population; single site; seasonal breeders; one day; asynchronous species; yet studied; xlink ">; seven colonies; quantifying asynchrony; minimized error; minimal expenditure; facilitate monitoring; correction factors; correction factor; common problem; 5 days; 30 jan; 2 days; 15 yielded; &# 241; King Range; Elephant Seals
• Online Access: https://doi.org/10.1371/journal.pone.0262214.t002

The total population using the colony in a year is estimated by multiplying a count on any of the dates by the given factor. Credible intervals and a longer series of dates are provided the S1 Appendix . ANI = Año Nuevo Island, ANML = Año Nuevo Mainland, PR = Point Reyes, CI = Channel Islands, KR = King Range.