Crows can remember a dangerous person and tell their friends about it. From "Social learning spreads knowledge about dangerous humans among American crows" (https://faculty.washington.edu/wirsinga/Cornell2011.pdf)

We exposed wild crows to a novel ‘dangerous face’ by wearing a unique mask as we trapped, banded and released 7 –15 birds at five study sites near Seattle, WA, USA. An immediate scolding response to the dangerous mask after trapping by previously captured crows demonstrates individual learning, while an immediate response by crows that were not captured probably represents conditioning to the trapping scene by the mob of birds that assembled during the capture. Later recognition of dangerous masks by lone crows that were never captured is consistent with horizontal social learning. Independent scolding by young crows, whose parents had conditioned them to scold the dangerous mask, demonstrates vertical social learning.