2.3 Video analysis
All videos were analyzed in Boris Video v7.9.1. BORIS (Behavioural
Observation Research Interactive Software, University of Torino) is a
free, open-source and multiplatform standalone program that allows a
user-specific coding environment to be set for a computer-based review
of previously recorded videos or live observations (Friard & Gamba,
2016). The software has been used in study behaviour of human, farm
animals, and wildlife (Aletta, Lepore, Kostara-Konstantinou, Kang, &
Astolfi, 2016). In BORIS, once the coding process is completed, the
program can extract a time-budget for single or grouped observation
automatically and present as an at-a-glance summary of the main
behaviour features (Friard & Gamba, 2016). Data of behaviour duration
and frequency was recorded and conversed to excel files.