Data from: The Global Avian Invasions Atlas - A database of alien bird distributions worldwide

<b>GAVIA_main_data_table.csv</b> - This comma-separated text file contains the 27,723 alien bird records that form the core of the Global AVian Invasions Atlas (GAVIA) project. These records represent 971 species, introduced to 230 countries and administrative areas across all eight biogeographical realms, spanning the period 6000 BCE – AD 2014. The data comprises taxonomic (species-level), spatial (geographic location, realm, land type) and temporal (dates of introduction and spread) components, as well as details relating to the introduction event (how and why the species was introduced, whether or not it is established). Each line of data consists of an individual record concerning a specific alien bird species introduced to a specific location. The data derives from both published and unpublished sources, including atlases, country species lists, peer-reviewed articles, websites and via correspondence with in-country experts.<b>GAVIA_abbreviations.csv</b> - This comma-separated text file describes the abbreviations in the main text of the 'GAVIA_main_data_table.csv'.<b>GAVIA_column_names.csv</b> - This comma-separated text file describes the column heading used in the 'GAVIA_main_data_table.csv'. <b>GAVIA_references.csv </b>- This comma-separated text file contains the full references referred to in the 'GAVIA_main_data_table.csv' column headed "Reference".<b>GAVIA_rangemaps.zip</b> - This compressed folder (.zip format) contains the species’ range maps stored as one ESRI shapefile per species (n = 362). Within these shapefiles are attribute tables which contain a unique species ID number and binomial which match up to the species ID number and binomial in the 'GAVIA main data table'.<b>GAVIA主数据表（GAVIA_main_data_table.csv）</b> - 该逗号分隔文本文件包含27723条外来鸟类记录，为全球鸟类入侵地图集（Global AVian Invasions Atlas, GAVIA）项目的核心支撑数据。这批记录涵盖971个鸟类物种，已被引入全球8个生物地理分区内的230个国家及行政区，时间跨度为公元前6000年至公元2014年。本数据集包含三类核心信息：分类学信息（物种层级）、空间信息（地理位置、生物地理分区、土地类型）与时间信息（引入与扩散时间），同时收录了与引入事件相关的详细细节，包括物种的引入途径、动因以及是否成功定殖。数据的每一行均为一条独立记录，对应某一特定外来鸟类物种在某一特定地点的引入情况。本数据集的数据来源覆盖已发表与未发表两类资料，包括地区鸟类分布图集、国家物种名录、同行评议学术论文、官方网站，以及与各国本土专家的通信往来。 <b>GAVIA缩写表（GAVIA_abbreviations.csv）</b> - 该逗号分隔文本文件用于说明《GAVIA主数据表（GAVIA_main_data_table.csv）》正文中出现的所有缩写术语。 <b>GAVIA列名表（GAVIA_column_names.csv）</b> - 该逗号分隔文本文件用于说明《GAVIA主数据表（GAVIA_main_data_table.csv）》所使用的列标题。 <b>GAVIA参考文献表（GAVIA_references.csv）</b> - 该逗号分隔文本文件收录了《GAVIA主数据表（GAVIA_main_data_table.csv）》中“参考文献”列所标注的全部完整文献信息。 <b>GAVIA分布范围压缩包（GAVIA_rangemaps.zip）</b> - 该压缩文件夹（.zip格式）包含各物种的分布范围地图，每个物种对应一个ESRI形状文件（ESRI shapefile），总计362个。每个形状文件内部均附带属性表，其中包含唯一的物种编号与双名法学名，与《GAVIA主数据表》中的物种编号及双名法学名一一对应。