Fine-Scale Movement Data Reveal Primarily Surface Foraging and Nocturnal Flight Activity in the Endangered Bermuda Petrel.

ABSTRACT: Foraging behaviour plays a fundamental role in animal fitness and population dynamics., particularly for central-place foragers like breeding seabirds. Among Procellariiform seabirds, petrels exhibit a wide range of foraging strategies finely tuned to the patchy and unpredictable distribution of resources. The extent and remote nature of their foraging grounds makes direct observation of foraging behaviour impractical, thereby requiring the use of remote tracking technologies. We deployed miniaturised multi-sensor biologgers and collected fine scale movement data to investigate the at-sea behaviours of the Bermuda petrel Pterodroma cahow, a poorly studied and highly threatened gadfly petrel, specialised on mesopelagic prey. GPS-tracking data revealed extensive foraging trips (mean ±

SUBMITTER: Becciu P 

PROVIDER: S-EPMC12207655 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature