LiterĂ¡k, Ivan
Skyrpan, Mykola
Andreyenkova, Natalya G.
Article History
Received: 28 December 2018
Accepted: 25 April 2019
First Online: 17 May 2019
Compliance with ethical standards
:
: No ethical approval was needed for using black kite female and red kite male in the study.
: The authors declare that they have no conflict of interest.