On the energetic differences of avian cryptochromes 4 from selected species Maja Hanić, Anders Frederiksen, Fabian Schuhmann and Ilia A. Solov’yov Eur. Phys. J. D, 76 10 (2022) 198 Published online: 25 October 2022 DOI: 10.1140/epjd/s10053-022-00520-5