Funding for this research was provided by:
Ministerstvo Zemědělství (MZE-RO0719)
Student Grant Agency of the University of South Bohemia (2011/008)
Article History
Received: 9 February 2019
Revised: 19 August 2019
Accepted: 21 August 2019
First Online: 12 September 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All applicable international, national, and institutional guidelines for the care and use of animals were followed. This research was carried out in line with all legislation of European Union and the Czech Republic. We received all appropriate permissions from the zoo authorities where the observations were performed. As this was an observational study with no manipulation or disturbance of the animals no animal care and use protocols were required.