Data presented in the paper "Colony-breeding Eurasian spoonbills in the Netherlands: local limits to population growth with expansion into new areas"

The dataset contains three files, all relating to spoonbill breeding colonies in the Netherlands. We used this dataset to assess population growth of Spoonbills in the Netherlands, and especially in the Wadden Sea. The first file contains yearly breeding colony sizes, which were obtained by counting in each of the colonies in each year the number of breeding pairs. This was done mostly by local nature management teams. The second file contains for several colonies in the Wadden Sea area the average yearly breeding success. This number was obntained by counting the number of fledglings in the ebnd of the breeding season. This was also done mainly by local nature management teams. The last file contains data on the condition of individual chicks in several colonies. These were obtained by researchers from the University of Groningen and NIOZ, and by several Staatsbosbeheer officers.

本数据集包含三份文件，全部聚焦荷兰境内的白琵鹭（Spoonbill）繁殖集群。本数据集被用于评估荷兰境内白琵鹭的种群增长情况，尤其针对瓦登海（Wadden Sea）区域的种群动态展开重点分析。
第一份文件收录各繁殖集群的年度种群规模数据，该数据通过每年统计各个繁殖集群内的繁殖对数量获取，主要由当地自然管理团队完成统计工作。
第二份文件涵盖瓦登海区域内多个繁殖集群的年度平均繁殖成功率数据，该指标通过统计繁殖季末期的离巢雏鸟数量计算得出，同样主要由当地自然管理团队负责采集。
第三份文件收录了多个繁殖集群内雏鸟个体的身体状况相关数据，该部分数据由格罗宁根大学（University of Groningen）与荷兰皇家海洋研究所（NIOZ）的研究人员，以及多名荷兰国家森林管理局（Staatsbosbeheer）工作人员共同采集获取。