Funding for this research was provided by:
Grantová Agentura České Republiky (18-23794Y)
Jihočeská Univerzita v Českých Budějovicích (GAJU n.048/2019/P)
Received: 20 December 2019
Accepted: 25 February 2020
First Online: 17 March 2020
: Birds were captured and raised in captivity under the permit number OOZP/5345/2018/R La issued by Environmental Protection Department of Czech Republic. Bird were euthanized (using a CO<sub>2</sub> chamber) following the guidelines of the Czech Republic’s dispensation of the law no. 359/2012 Col., § 17, par. 1 (i.e., animal cruelty act) under the permit number MZP/2018/785/1363 issued by Ministry of the Environment of the Czech Republic.
: The authors declare that they have no competing interests.