Animal-borne video logger observations, depth records, and krill length data from chinstrap penguins in the Southern Ocean from 2019-12-20 to 2020-01-31 (NCEI Accession 0239297)

This data set contains raw, annotated, and synthesized data used in the analysis by Hinke et al. (2021) titled "Serendipitous observations from animal-borne video loggers reveal synchronous diving and equivalent prey capture rates in chinstrap penguins" (https://doi.org/10.1007/s00227-021-03937-5). The data derive from field work to monitor the diving and predation behaviors of two chinstrap penguins (Pygoscelis antarcticus) from Cape Shirreff, Livingston Island (60.79 W, 62.46 S) in Antarctica. Sampling occurred from 20 December 2019 to 31 Jan 2020. The raw data include the video files and complete dive records from the deployment of animal-borne video loggers and time-depth recorders on two individual chinstrap penguins. The videos are recorded in 30-minute clips and encompass over 4.5 hours of observation for each bird. Five independent, manual annotations of each video, transcribed onto the corresponding time-depth records of each bird, respectively, document the diving and predation events observed in each video. A separate annotation file that records the presence of companion birds in each video is also included. Additionally, we include two files that were generated during the analysis of the data. The first merges each (N=5) annotation of krill consumption and dive duration for each synchronous dive. The second merges select dive characteristics from each synchronous dive. Finally, we include data on the lengths of krill eaten by penguins during the study period. The krill length data were collected via gastric lavage to characterize the prey field that was encountered by foraging penguins during the sampling season. A README file fully documents each file and important header information.本数据集包含Hinke等人2021年题为《搭载动物的视频记录仪的偶然观测揭示帽带企鹅同步潜水与等效捕食率》的分析研究中所用的原始、标注及合成数据，对应论文DOI链接为https://doi.org/10.1007/s00227-021-03937-5。本数据集的数据源自针对南极洲利文斯顿岛谢尔夫角（西经60.79°，南纬62.46°）的两只帽带企鹅（Pygoscelis antarcticus）的潜水与捕食行为开展的野外监测工作。采样时段为2019年12月20日至2020年1月31日。原始数据包含为两只个体帽带企鹅部署动物搭载式视频记录仪与时间深度记录仪（time-depth recorder）所获取的视频文件及完整潜水记录。视频以30分钟片段为单位进行录制，每只企鹅的有效观测时长均超过4.5小时。针对每段视频开展五次独立人工标注，并分别转录至对应企鹅的时间深度记录中，用于记录每段视频中观测到的潜水与捕食事件。本数据集还附带一份单独的标注文件，用于记录每段视频中伴生企鹅的出现情况。此外，本数据集还包含两份在数据分析过程中生成的文件：第一份文件合并了每次同步潜水对应的五次（N=5）磷虾进食量与潜水时长标注信息；第二份文件合并了每次同步潜水的精选潜水特征参数。最后，本数据集还包含研究期间企鹅所食用磷虾的体长数据，该数据通过洗胃法采集，用于表征采样季内觅食企鹅所遭遇的猎物群落特征。本数据集附带一份README文件，对所有文件及重要的表头信息进行完整说明。