Data from: Scrutinizing assortative mating in birds

S1_Data.xlsxUnpublished data (nine long-term field studies): All the pairs that have been identified across the nine studies where both pair members have at least one morphological record, including repeated records from different years. This dataset also includes latitude and longitude of the nest site (Lambert azimuthal equal-area projection, units = meters) and year and, if available, the putative date of the first egg.Supplementary_file_1_unpublished_data1.xlsxS2_Data.xlsxUnpublished data (nine long-term field studies): All available records of morphological traits which covered more than 95% of individuals included in S1_Data.This dataset also includes the location where the individual was caught, the date of catching, and the observer who measured the individualSupplementary_file_2_unpublished_data2.xlsxS3_Data.xlsxUnpublished data (nine long-term field studies): Data where we combined the information from data S1_Data and S2_DataSupplementary_file_3_unpublished-data3.xlsxS4_Data_xlsxPublished data (Fig 1A): Excel spreadsheet containing two separate sheets with data from literature: 1) data extracted from the publications and 2) the original references.Literature_data.xlsxS5_Data_xlsxData for Fig 1B: Strength of assortative mating for size as a function of data source.Pearons_r_different_data_sources_integrated_mixed_model.xlsxS6_Data_xlsxModels for the unpublished data (Fig 1C): Excel spreadsheet contains 6 separate sheets; each sheet corresponds to a model to estimate the strength of assortative mating.Models_of_unpublished_data.xlsxS7_Data,xlsxData for Fig 2: Strength of assortative mating for body size in relation to sample size.Funnel_plot_asymmetry_test.xlsxS8_Data.xlsxExperimental data on zebra finches. The zebra finches data include five experiments.Experimental data_zebra_finch.xlsxPRISMA_literature summaryThe process of literature investigation.PRISMA_summary of literature.docx