Kulibaba, R. O.
Liashenko, Yu. V.
Article History
Received: 3 March 2021
Revised: 25 March 2021
Accepted: 1 July 2021
First Online: 23 July 2021
COMPLIANCE WITH ETHICAL STANDARDS
: Conflict of interests. The authors declare that they have no conflicts of interest.
: Statement on the welfare of animals. Studies were carried out using Bubo bubo feathers as a source of biological material without direct manipulations concerning birds.