Seasonal Asymmetry in Bird Community Thermophilization: Breeding Communities Track Warming Upward, Winter Communities Poleward

Purpose This repositry contain the code and data to generate the results, figure and table of the article titled "Bird communities are thermophilizing, but breeding and winter communities track warming through different directions", Files CleanedOccurrenceData.csv This file contains the japanese bird community data. To reduce the file size, we have already completed the data screeaning and selecting the columns. The original occurrence data can be obtained from GBIF.org (19 April 2026) GBIF Occurrence Download https://doi.org/10.15468/dl.nhj8hd. Code for Submission(Thermophilization in Japanese Birds).R This file contains the R manuscript to generate the result of the article. This manuscript uses the following R packages. South A, Michael S, Massicotte P (2024). _rnaturalearthdata: World Vector Map Data from Natural Earth Used in 'rnaturalearth'_. 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