Tasmanian wedge-tailed eagle power line crossings

Avian fatalities caused by collisions with overhead power lines are an important conservation issue worldwide. Although mitigation strategies can help reduce mortalities, given their considerable cost and the vast scale of power line infrastructure, cost-effective action requires that these efforts be prioritised to areas with the highest potential risk to birds. To date, this risk assessment has usually been guided by potentially biased information on the location of recorded fatalities.
Here we use six years of GPS tracking data from endangered Tasmanian wedge-tailed eagles to develop an alternative approach to risk assessment: fine-scale spatial risk models based on behavioural analyses. We built and cross-validated a model that generates spatially explicit predictions of the probability that eagles would cross power lines at hazardous altitudes throughout the entire Tasmanian electricity distribution network.
In our model, probability of power line crossings was most strongly associ..., This data set is of locations where 23 young Tasmanian wedge-tailed eagles crossed power line infrastructure at low altitude between 2017 and 2023. 
It includes a unique identifier for each eagle ('name'). The variables include the sex of the bird ('sex'), the age class of the bird ('ageclass'), the season, the month, the number of months since fledging ('monthsincefledge'), and the time of day of the crossing ('timeofday'). The unscaled values for each of 13 landscape variables (agricultural area, distance to nearest ridge, dry forest area, elevation, forest area, forest edge, open area, residential buildings, ruggedness, rural residential area, slope, urban area, water area, wet forest area) measured for the crossings, including a suffix designating the spatial scale of the measurement, are also included. , , # Tasmanian wedge-tailed eagle power line crossings

[https://doi.org/10.5061/dryad.p5hqbzkwp](https://doi.org/10.5061/dryad.p5hqbzkwp)

## Description of the data and file structure

### Files and variables

#### File: TWTEcrossingdata\_v4.csv

* name: unique eagle identifier 

- sex: sex of the eagle as determined from genetic sample
- ageclass: age class separated into different categories (PFDP = post-fledging dependence period; firstyrdisp = first year of dispersal; secondyrdisp = second year of dispersal; thirdyrdisp = third year of dispersal...)
- season: season of observation
- month: month of observation
- monthsincefledge: number of months since the eagle fledged the nest
- timeofday: time of day that the crossing occurred 
- openarea349: proportion of open habitats 
- forestedge815: proportion of forest edges
- residentialarea30: proportion of rural residential area
- agriculturalarea349: proportion of agricultural area
- waterarea349: proportion of water area
- wetforestarea...,