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Reconstruction of long-distance bird migration routes using advanced machine learning techniques on geolocator data.


ABSTRACT: Geolocators are a well-established technology to reconstruct migration routes of animals that are too small to carry satellite tags (e.g. passerine birds). These devices record environmental light-level data that enable the reconstruction of daily positions from the time of twilight. However, all current methods for analysing geolocator data require manual pre-processing of raw records to eliminate twilight events showing unnatural variation in light levels, a step that is time-consuming and must be accomplished by a trained expert. Here, we propose and implement advanced machine learning techniques to automate this procedure and we apply them to 108 migration tracks of barn swallows ( Hirundo rustica). We show that routes reconstructed from the automated pre-processing are comparable to those obtained from manual selection accomplished by a human expert. This raises the possibility of fully automating light-level geolocator data analysis and possibly analysing the large amount of data already collected on several species.

SUBMITTER: Pancerasa M 

PROVIDER: S-EPMC6597775 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature

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Reconstruction of long-distance bird migration routes using advanced machine learning techniques on geolocator data.

Pancerasa Mattia M   Sangiorgio Matteo M   Ambrosini Roberto R   Saino Nicola N   Winkler David W DW   Casagrandi Renato R  

Journal of the Royal Society, Interface 20190619 155


Geolocators are a well-established technology to reconstruct migration routes of animals that are too small to carry satellite tags (e.g. passerine birds). These devices record environmental light-level data that enable the reconstruction of daily positions from the time of twilight. However, all current methods for analysing geolocator data require manual pre-processing of raw records to eliminate twilight events showing unnatural variation in light levels, a step that is time-consuming and mus  ...[more]

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