Observing the unwatchable through acceleration logging of animal behavior

DD Brown, R Kays, M Wikelski, R Wilson… - Animal Biotelemetry, 2013‏ - Springer
Behavior is an important mechanism of evolution and it is paid for through energy
expenditure. Nevertheless, field biologists can rarely observe animals for more than a …

Validation of cut-points for evaluating the intensity of physical activity with accelerometry-based mean amplitude deviation (MAD)

H Vähä-Ypyä, T Vasankari, P Husu, A Mänttäri… - PloS one, 2015‏ - journals.plos.org
Purpose Our recent study of three accelerometer brands in various ambulatory activities
showed that the mean amplitude deviation (MAD) of the resultant acceleration signal …

Tri-axial dynamic acceleration as a proxy for animal energy expenditure; should we be summing values or calculating the vector?

L Qasem, A Cardew, A Wilson, I Griffiths, LG Halsey… - PloS one, 2012‏ - journals.plos.org
Dynamic body acceleration (DBA) has been used as a proxy for energy expenditure in
logger-equipped animals, with researchers summing the acceleration (overall dynamic body …

Making overall dynamic body acceleration work: on the theory of acceleration as a proxy for energy expenditure

AC Gleiss, RP Wilson… - Methods in Ecology and …, 2011‏ - Wiley Online Library
The energetic costs of different behaviours are critical in modulating the behavioural ecology
of free‐living animals. Despite this, measurement of energy expenditure in the field has …

Identification of animal movement patterns using tri-axial accelerometry

ELC Shepard, RP Wilson, F Quintana… - Endangered species …, 2008‏ - int-res.com
An animal's behaviour is a response to its environment and physiological condition, and as
such, gives vital clues as to its well-being, which is highly relevant in conservation issues …

The challenges of the first migration: movement and behaviour of juvenile vs. adult white storks with insights regarding juvenile mortality

S Rotics, M Kaatz, YS Resheff… - Journal of Animal …, 2016‏ - Wiley Online Library
Migration conveys an immense challenge, especially for juvenile birds co** with enduring
and risky journeys shortly after fledging. Accordingly, juveniles exhibit considerably lower …

Assessing the development and application of the accelerometry technique for estimating energy expenditure

LG Halsey, ELC Shepard, RP Wilson - … and Physiology Part A: Molecular & …, 2011‏ - Elsevier
A theoretically valid proxy of energy expenditure is the acceleration of an animal's mass due
to the movement of its body parts. Acceleration can be measured by an accelerometer and …

Derivation of body motion via appropriate smoothing of acceleration data

ELC Shepard, RP Wilson, LG Halsey, F Quintana… - Aquatic Biology, 2008‏ - int-res.com
Animal movement, as measured by the overall dynamic body acceleration (ODBA), has
recently been shown to correlate well with energy expenditure. However, accelerometers …

Automatic classification system for grazing, ruminating and resting behaviour of dairy sheep using a tri-axial accelerometer

V Giovanetti, M Decandia, G Molle, M Acciaro… - Livestock Science, 2017‏ - Elsevier
A device based on a tri-axial accelerometer was used to measure behavioural parameters of
dairy sheep at pasture. Short tests were performed in grazing conditions to collect …