Movement strategies of neotropical nectarivorous birds: Insights from high-Andean hummingbirds and flowerpiercers

Tropical nectarivorous birds should have flexible movement behaviors in response to the spatiotemporal availability of flowers. In the Neotropics, hummingbirds (Trochilidae) have diet breadths constrained by trait-matching with flowers, while nectar-robbing flowerpiercers (Thraupidae) typically drink nectar from holes pierced at the flower’s base. Distinct movement patterns for these two bird families would be expected from optimal foraging theory due to differences in dietary specialization and behavioral flexibility, yet little is known about the daily movement patterns of tropical nectarivores. We used fine-resolution tracking data from an automated radio telemetry grid to compare movement patterns between hummingbirds and flowerpiercers in high-Andean mountain ecosystems, and obtained an accumulated total of 435,513 location estimates and 452 tracking days from 22 individuals across six bird species. Our results indicate that hummingbirds exhibit a greater diversity of movement beha..., , # Movement strategies of neotropical nectarivorous birds: Insights from high-Andean hummingbirds and flowerpiercers

Dataset DOI: [10.5061/dryad.pk0p2nh38](https://doi.org/10.5061/dryad.pk0p2nh38)

## Description of the data and file structure

This dataset includes all data and the necessary code in R scripts to reproduce the results presented in the associated paper.

### Files and variables

#### File: cleaned_tracks.csv

**Description:** Location estimates of tracked hummingbirds and flowerpiercers.

##### Variables

* reloc: Number of sequential relocation
* No.Nodes: Number of nodes used to estimate location
* x.est: Estimated x coordinate, projectedEPSG:3116
* y.est: Estimated y coordinate, projectedEPSG:3116
* TagId: Unique tag identifier
* Time.local: Local datetime
* bin.2h: Identification of 2h bins used for cubic spline smoothing
* tag_type: Type of tag used, either LifeTag or PowerTag
* Tag.start.time: Local datetime for tag deployment
* x_cs:Estimated x coordinate smoothed...,

热带食蜜鸟类应具备灵活的移动行为，以应对花卉的时空分布变化。在新热带区，蜂鸟（Trochilidae）的食谱宽度受其与花卉的性状匹配关系限制，而盗蜜花雀（Thraupidae）通常通过在花基部穿孔来吸食花蜜。基于最优觅食理论，由于食性特化和行为灵活性的差异，这两个鸟类类群理应表现出不同的移动模式，但目前学界对热带食蜜鸟类的日常移动模式仍知之甚少。我们利用自动无线电遥测网格获取的高分辨率追踪数据，在高安第斯山地生态系统中对比了蜂鸟与盗蜜花雀的移动模式，最终从6个鸟类物种的22只个体中累计得到435513条位置估计数据与452个追踪日。本研究结果显示，蜂鸟展现出更为多样的移动行为……

# 新热带区食蜜鸟类的移动策略：来自高安第斯山地蜂鸟与盗蜜花雀的研究启示

数据集DOI：[10.5061/dryad.pk0p2nh38](https://doi.org/10.5061/dryad.pk0p2nh38)

## 数据与文件结构说明

本数据集包含复现关联论文中结果所需的全部数据与R脚本代码。

### 文件与变量

#### 文件：cleaned_tracks.csv

**描述：** 被追踪蜂鸟与盗蜜花雀的位置估计数据。

##### 变量
* reloc：连续重定位编号
* No.Nodes：用于估计位置的节点数量
* x.est：估计的x坐标，投影坐标系为EPSG:3116
* y.est：估计的y坐标，投影坐标系为EPSG:3116
* TagId：唯一标签标识符
* Time.local：本地日期时间
* bin.2h：用于三次样条平滑的2小时间隔标识
* tag_type：所用标签类型，可为LifeTag或PowerTag
* Tag.start.time：标签部署的本地日期时间
* x_cs：经平滑处理的估计x坐标……