DOI: 10.5061/dryad.q83bk3jrz
title: Raw amplitude measurements for arctic bird vocalizations from Utqiagvik, Alaska, with associated environmental data and modelling code

description: This dataset consists primarily of amplitude values (dBA re 20 µPa) of
 sounds made by birds in Utqiagvik, Alaska, during June 2-22, 2024, as
 measured using a LATNEX sound pressure level (SPL) meter (SM-130DB, fast
 time integration). Each measurement is the maximum SPL measured during an
 individual call or song produced by a bird. These measurements were made
 in the open tundra opportunistically when birds were calling in the
 near-field (i.e., less than 50 meters distance from the measurer).
 Measurements were not made when multiple animals were calling, or when
 other background noises (e.g., planes, cars, human voices, or wind) were
 present.
description: # Raw amplitude measurements for arctic bird vocalizations from Utqiagvik,
 Alaska, with associated environmental data and modelling code
 [https://doi.org/10.5061/dryad.q83bk3jrz](https://doi.org/10.5061/dryad.q83bk3jrz) ## Description of the data and file structure ### Files and variables #### File: raw_amplitude_measurements.csv **Description:** This CSV file includes the following:  ##### Variables * Species: species identification for the vocalizing bird * Individual: individual identification of the vocalizing bird * Date: date of June (e.g., 2-22) during which the measurement was made * Distance: estimated distance (in meters) between the observer and the bird * dBA: measured maximum SPL during an individual avian vocalization  * Wind_speed, temperature, humidity: Hourly values of these variables, as accessed using the NOAA National Center for Environmental Information Climate Data Online service, Barrow Airport station, [https://www.ncei.noaa.gov/cdo-web/datasets/GHCND/stations/GHCND:USW00027502/detail](https://www.ncei.noaa.gov/cdo-web/datasets/GHCND/stations/GHCND:USW00027502/detail). The 'daily summaries' dataset was requested using this tool, and hourly values for relevant variables were extracted manually from the resulting PDF. Units are as follows: wind speed- miles per hour, temperature- degrees Farenheit, and humidity- relative, percentage.  * Family: phylogenetic family classification of the bird * Body mass: average species' body mass for the species in question, either from local data or the Birds of the World database, [https://birdsoftheworld.org/bow/home](https://birdsoftheworld.org/bow/home). More information about these values can be found in the manuscript associated with this dataset.  * Habitat: general habitat for the species in question, as listed in the Birds of the World database * Env_noise: estimated environmental noise (dBA) before each vocalization  * Type: type of vocalization measured, 'breeding display', 'general call', or 'territory defense call' #### File: birdtree_phylos.nex **Description:** Nexus file including 100 randomly chosen phylogenetic trees from birdtree.org, including all species for which we modeled the relationship between body mass and amplitude in the manuscript associated with this dataset. ### Code/software The code included with this dataset consists of a single file written in R programming language, with detailed comments for maximum reproducibility. This code contains all packages and details to produce all figures, tables, and models in the manuscript associated with this dataset.