What does this research mean for the field?

GPS fix-loss cannot serve as a reliable standalone proxy for nest attendance in burrow-nesting birds due to a high rate of false positives, although these positioning failures are non-random. Novelty: ClaimNovelty.CONTRADICTORY. Consensus alignment: ConsensusAlignment.CHALLENGES_CONSENSUS.

What question did this study set out to answer?

To evaluate whether GPS positioning failure (fix-loss) can serve as a reliable standalone proxy for nest attendance in a burrow-nesting bird species.

August 29, 2026Ibis

GPS fix‐loss alone cannot serve as a reliable proxy for nest attendance in burrow‐nesting birds

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Authors

YCYachang Cheng YLYuxin Lu BZBing Zhou

Discussion

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Overview

Validation study reveals poor reliability of GPS fix-loss for detecting nest attendance in burrow-nesting bee-eaters, highlighting the need for caution when interpreting missing biologging data.

Key Points

To evaluate whether GPS positioning failure (fix-loss) can serve as a reliable standalone proxy for nest attendance in a burrow-nesting bird species.
Tracked urban breeding Blue-tailed Bee-eaters (Merops philippinus) using GPS-VHF loggers.
Integrated onboard light sensors to provide ground-truth verification of underground nest visits versus daylight exposure.
GPS fix-loss identified 97.5% of true in-nest attendance events.
A high frequency of failed GPS attempts during high light intensity produced a low positive predictive value of 19.2%.
Agreement between GPS fix-loss and light sensor ground-truth was slight (Cohen's Kappa = 0.15), demonstrating fix-loss is insufficient on its own to confirm burrow attendance.

Cite This Study

Cheng et al. (2026) studied this question.

synapsesocial.com/papers/6a9299c88e5d7d1fc0c1204e https://doi.org/10.1111/ibi.70114

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August 29, 2026Ibis

GPS fix‐loss alone cannot serve as a reliable proxy for nest attendance in burrow‐nesting birds

View Full Paper

Ask AI

Bookmark

Authors

YCYachang Cheng YLYuxin Lu BZBing Zhou

Discussion

Member takes

Overview

Validation study reveals poor reliability of GPS fix-loss for detecting nest attendance in burrow-nesting bee-eaters, highlighting the need for caution when interpreting missing biologging data.

Key Points

To evaluate whether GPS positioning failure (fix-loss) can serve as a reliable standalone proxy for nest attendance in a burrow-nesting bird species.
Tracked urban breeding Blue-tailed Bee-eaters (Merops philippinus) using GPS-VHF loggers.
Integrated onboard light sensors to provide ground-truth verification of underground nest visits versus daylight exposure.
GPS fix-loss identified 97.5% of true in-nest attendance events.
A high frequency of failed GPS attempts during high light intensity produced a low positive predictive value of 19.2%.
Agreement between GPS fix-loss and light sensor ground-truth was slight (Cohen's Kappa = 0.15), demonstrating fix-loss is insufficient on its own to confirm burrow attendance.

Cite This Study

Cheng et al. (2026) studied this question.

synapsesocial.com/papers/6a9299c88e5d7d1fc0c1204e https://doi.org/10.1111/ibi.70114

View Full Paper

Ask AI

Bookmark