Just half a second after Marcus threw the axe to Joseph, a distant cry, muffled by the walls and door surrounding them yet still easily audible,could be heard. To a native Yharnamite like Marcus, the horrid shriek would likely be easily recognizable as the voice of a beast, though he might not have the experience to determine which one, especially since the church tries to limit the knowledge of the public regarding beasts.
The Messengers also seem to get a little agitated. The little ones crowding on top of the dead suddenly fall off their cots entirely, either scattering on the floor or disappearing into tiny portals. Within a couple of seconds, the number of Messengers in the room has halved.
Approximately twenty seconds after the shriek, the cry of a corvid followed.