Common Raven (Corvus corax)

[HTML] What constitutes “social complexity” and “social intelligence” in birds? Lessons from ravens; PH Boucherie, MC Loretto, JJM Massen, T Bugnyar – Behavioral Ecology and, 2019

Population responses of common ravens to reintroduced gray wolves
LE Walker, JM Marzluff, MC Metz… – Ecology and …, 2018 – Wiley Online Library

Common ravens, Corvus corax, preferentially associate with grey wolves, Canis lupus, as a foraging strategy in winter. Stahler D, Heinrich B, Smith D. Animal Behaviour. 2002 Aug