Funding for this research was provided by:
Lietuvos Mokslo Taryba (DOTSUT-137-09.3.3-LMT-K-712-02-0004, S-MIP-17-27)
Text and Data Mining valid from 2019-11-04
Received: 9 August 2019
Accepted: 25 October 2019
First Online: 4 November 2019
Ethics approval and consent to participate
: This study complies with the current laws of Lithuania, was performed by licenced researchers and was approved by the Lithuania and Environmental Protection Agency, Vilnius (2018‑04‑13, no. 24). None of the experimental birds suffered apparent injury during sampling.
: Not applicable.
: The authors declare that they have no competing interests.