Well, we all have to wait, the paper isn't published yet, there is at this moment only an abstract. But if you want to know more about Bohaiornis, the description is on https://www.birdforum.net/threads/descriptions-of-all-fossil-enantiornithes.402318/
Shumin Liu, Zhiheng Li, Alida Bailleul, Min Wang and Jingmai Kathleen O'Connor, 2021
Investigating possible gastroliths in a referred specimen of Bohaiornis guoi (Aves: Enantiornithes)
Frontiers in Earth Science (abstract only)
Provisionally accepted. The final, formatted version of the...