Folders: ROOT > ScienceBase Catalog > USGS Western Ecological Research Center > Western Ecological Research Center Approved Data Releases > At-Sea Ranging Behavior of Seabirds Breeding in the Main Hawaiian Islands: Bio-logger Data Release (ver. 2.0, May 2020) ( Show direct descendants )
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We deployed miniature Temperature-Depth Recorders (TDRs; Cefas G5, 3 g, Cefas Technology Ltd., Lowestoft, UK) to measure dive depths and wet/dry condition (depending on TDR model year). TDRs have a saltwater switch that, when immersed, initiates a FastLog mode to record pressure and temperature at high resolution. The FastLog mode can be programmed to record only if the pressure is greater than a user-defined threshold (e.g. dive depth). In addition, some units have a wet/dry setting to record the start and end times of wet periods (bouts of time on the water, regardless of dive behavior). CEFAS G5 TDRs are an archival unit, requiring recapture of the tagged bird to recover the tag and download data. TDRs were...
We deployed miniature Temperature-Depth Recorders (TDRs; Cefas G5, 3 g, Cefas Technology Ltd., Lowestoft, UK) to measure dive depths and wet/dry condition (depending on TDR model year). TDRs have a saltwater switch that, when immersed, initiates a FastLog mode to record pressure and temperature at high resolution. The FastLog mode can be programmed to record only if the pressure is greater than a user-defined threshold (e.g. dive depth). In addition, some units have a wet/dry setting to record the start and end times of wet periods (bouts of time on the water, regardless of dive behavior). CEFAS G5 TDRs are an archival unit, requiring recapture of the tagged bird to recover the tag and download data. TDRs were...
In this study, we employed several bio-logging technologies to track at-sea movement and behavior of five main Hawaiian Island (MHI) breeding seabird species (Brown Booby [Sula leucogaster], Laysan Albatross [Phoebastria immutabilis], Red-tailed Tropicbird [Phaethon rubricauda], Red-footed Booby [Sula sula], and Wedge-tailed Shearwater [Ardenna pacifica]) at multiple breeding colonies on or near the islands of Maui, O‘ahu, and Kaua‘i. We utilized Global Positioning System (GPS) tags to track seabird spatial movements, temperature-depth recorders (TDRs) to measure diving and immersion patterns, and accelerometry to identify behaviors. The Deployments table provides details of all deployment and ancillary information...
We deployed three models of e-obs GPS loggers on seabirds in this study: Bird Solar 30g, Bird Solar 15g, and Bird Battery 30g (e-obs GmbH, Gruenwald, Germany). Bird Solar 30g and Bird Battery 30g tags were used on Laysan Albatross (Phoebastria immutabilis) and Bird Solar 15g tags were used on Red-footed Boobies (Sula sula). All e-obs GPS tags utilized a base station to acquire and archive tracking data, thus absolving the need to recover the GPS tag to retrieve data. Bird Solar (30 g and 15 g) tags included a solar panel to recharge tag battery while deployed, whereas the Bird Battery 30 g tag relied exclusively on an internal battery for power supply. All e-obs GPS tags included onboard tri-axial accelerometers....
We deployed modified iGotU GT-120 (Mobile Action Technologies, New Taipei City, Taiwan) on Red-tailed Tropicbirds (Phaethon rubricauda; 2014-2016), Brown Boobies (Sula leucogaster; 2014-2015), Red-footed Boobies (Sula sula; 2013-2015), and Wedge-tailed Shearwaters (Ardenna pacifica; 2013-2015). The iGotU GT-120 GPS tags are an archival unit, requiring recapture of the tagged bird to recover the tag and download data. Because these are consumer electronic products and not specifically designed for wildlife telemetry, we stripped GT-120 loggers from their factory housings and sealed them within 2:1 low-shrink-temperature, polyolefin heat-shrink tubing to create a lightweight, waterproof housing (AMS-DTL-23053/ 5-310,...
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