Dataset - Three neotropical bird species shift nest-site preferences from swollen-thorn acacias to other sites in human-altered habitats

The Excel file includes four datasheets. · #Nests_trees: refers to the observed number of bird nests by tree species in the different habitats. It also includes nests placed on electrical wires or electricity poles. The spreadsheet includes the expected number of nests, calculated from the proportional abundance at each habitat, and the standardized residuals (standardized difference between observed and expected values) · #Nests_ants: it includes the number of bird nests on swollen-thorn acacias (Vachellia collinsii), and the ant species nesting inhabiting it, and separated by the sampled habitats. · Tree_abundance includes the number of trees by habitat of the 15 species where at least one of the three birds of interest nested on. All other censused trees are in the category "Other". · Acacia-ant_abundance includes the number of ant-species by habitat that were associated with an acacia tree in which were at least one bird nest of interest.

该Excel文件包含四个数据表。· #Nests_trees（鸟巢-树木数据表）：记录了不同生境下按树木种类统计的观测鸟巢数量，同时涵盖架设于电线或电杆上的鸟巢。该工作表包含基于各生境物种比例丰度计算得到的理论预期鸟巢数量，以及标准化残差（观测值与预期值之间的标准化差值）。· #Nests_ants（鸟巢-蚂蚁数据表）：记录了膨胀刺金合欢（Vachellia collinsii）上的鸟巢数量、栖息其上的筑巢蚂蚁物种，并按采样生境进行分类统计。· 树木丰度（Tree_abundance）数据表：按生境统计了15种树木的数量，这15种树木均至少被三种目标鸟类中的一种用作筑巢位点，其余所有经普查的树木均归入"Other"（其他）类别。· 金合欢-蚂蚁丰度（Acacia-ant_abundance）数据表：按生境统计了与存在至少一处目标鸟类巢穴的金合欢树相关联的蚂蚁物种数量。