Despite being sympatricwith the Cuban crow (Corvus nasicus) on Cuba, it appears to be more closely related to the fish crow(C. ossifragus) of the East Coast of the United States, as well as two smaller species, the Tamaulipas crow(C. imparatus) and Sinaloa crow(C. sinaloae) of Mexico, than the Cuban crow, which is more related to the white-necked crow (Corvus leucognaphalus) and the Jamaican crow(Corvus jamaicensis), the other two Caribbean corvids. This indicates two distinct arrivals of crows onto the island of Cuba (with the ancestor of the two palm crows being a later arrival), and a resulting niche differentiation, similar to C. leucognaphalus and C. palmarum on Hispaniola.
The following cladogram is based on phylogenetic study of the Corvidae by Knud Jønsson and collaborators that was published in 2012.[6]
^González Alonso, H. 2012. *Corvus palmarum*. Pp. 249–250 en Li-bro Rojo de los Vertebrados de Cuba (H. González Alonso, L. Rodríguez Schettino, A. Rodríguez, C.A. Mancina e I. Ramos García, eds.). Editorial Academia, La Habana, Cuba