Data from: Long-term changes in the seasonal timing of landbird migration on the Pacific Flyway ...

• Main Authors: Barton, Gina G., Sandercock, Brett K.
• Format: Dataset
• Language: English
• Published: Dryad 2018
• Subjects: Setophaga petechia; Catharus ustulatus; quantile regression; Cardellina pusilla; Empidonax difficilis; Oreothlypis celata; climate indices; timing of migration; 1987 to 2008; Pacific; San Jose; North Atlantic; North Atlantic oscillation
• Online Access: https://dx.doi.org/10.5061/dryad.t00nn; https://datadryad.org/stash/dataset/doi:10.5061/dryad.t00nn

The seasonal phenology of latitudinal movements is one of the key life-history traits of migratory birds. We used quantile regression to examine long-term changes in the timing of spring and autumn migration in 5 species of migratory passerine birds captured at a banding station in northern California, USA, over a 22 yr period from 1987 to 2008. Our 5 study species included 3 short-distance migrants, Pacific-slope Flycatcher (Empidonax difficilis), Orange-crowned Warbler (Oreothlypis celata), and Wilson's Warbler (Cardellina pusilla); and 2 long-distance migrants, Swainson's Thrush (Catharus ustulatus) and Yellow Warbler (Setophaga petechia). Median timing of migration advanced in spring for 2 of the 5 species (−2.5 days decade−1) but was delayed during autumn migration for 3 of the species (+2.9 days decade−1). The duration of the migration period also became compressed in some species but more protracted in others. We tested whether annual variation in migration timing was related to 3 indices of regional ... : Capture DataA comma-delimited file with the capture data for 5 species of songbirds at the Coyote Creek banding station, San Jose, Santa Clara Co., California, 1987 to 2008.CaptureData.csvWeather DataA comma-delimited file with monthly or bimonthly averages for three climatic indexes, 1980 to 2009. The three indices include: MEI = Multivariate El Nino/Southern Oscillation Index, NAO = North Atlantic Oscillation index, PNA = Pacific/North American indexWeatherData.csvSpring MigrationAn R script for spring migration, quantile regression and modeling median arrival vs. climatic indicesSpringMigration.RAutumn MigrationAn R script for autumn migration, quantile regression and modeling median arrival vs. climatic indicesAutumnMigration.RWeather AnalysisAn R script for analysis of climate variablesWeatherAnalysis.RREAD MEMetadata for data files and R scripts ...