Southern Giant Petrel Macronectes giganteus GPS tracking and bill length

This dataset contains two files: one with GPS tracking data from Southern Giant Petrels (Macronectes giganteus) breeding in Harmony Point (Nelson Island, 59.19ºW 62.30ºS), and one with their bill length. A figure showing how the bill length was measured is also available. The tracking consists of a csv file with unique individual bird id (BirdId = ring number), timestamp (YYYY-mm-dd, GMT ) Longitude Latitude (EPSG 4326), and season (breeding seasons 2021/22, 2022/23 and 2024/25,mostly December and early January). These are raw data with 5-min interval geographical fixes (however a few individuals had 10-min interval, easily identified in the dataset), collected using CaLog-P Gen 2 epoxy cased GPS loggers (Perthold Technology, 50g) and Sputnik XAIS GPSs (Sextant Technology, 70g). Bill length (as exemplified in the figure) measured in mm, also with the unique individual bird id (ring number) and sex, assumed as the smaller individual of the breeding pair being a female, and the larger a male. Data collection was funded by Instituto Antártico Chileno Programa Áreas Marinas Protegidas (AMP 24 09 052) and ANID, through Instituto Milénio de Biodiversidad de Ecosistemas Antárticos y Subantarticos (Programa Iniciativa Milénio ICN2021_002).本数据集包含两类文件：其一为在和谐角（纳尔逊岛，西经59.19°，南纬62.30°）繁殖的南方巨鹱（Macronectes giganteus）的GPS追踪数据，其二为其喙长测量数据，同时附带一份展示喙长测量方式的示意图。 追踪数据以CSV格式存储，包含唯一个体鸟类标识（BirdId，即环志编号）、时间戳（格式为YYYY-mm-dd，采用GMT时区）、经度、纬度（采用EPSG 4326坐标系）以及繁殖季信息（覆盖2021/22、2022/23与2024/25三个繁殖季，数据多采集于12月及次年1月初）。本数据集为原始地理定位数据，多数个体的定位间隔为5分钟，仅少数个体为10分钟（可在数据集中快速识别），采集设备为CaLog-P Gen 2环氧封装GPS记录仪（Perthold Technology公司，重量50g）与Sputnik XAIS GPS设备（Sextant Technology公司，重量70g）。 喙长测量值单位为毫米，测量方式详见附带示意图，该数据集同时包含唯一个体鸟类标识（环志编号）以及性别信息：繁殖配对中体型更小的个体被认定为雌性，体型更大的个体为雄性。 本数据采集工作由智利南极研究所（Instituto Antártico Chileno）海洋保护区项目（AMP 24 09 052）以及ANID通过南极与亚南极生态系统生物多样性千年研究所（Programa Iniciativa Milénio ICN2021_002）资助。