Monotypic. Plumage consistent. M/F similar. Very difficult to visually detect -- easier with audio. Compared to AMCR, FICR have a less scaled, more smooth appearance of feathering. This is visible, although hard to get high enough qualify images to confirm. While in NOVA, was one of my favorites. In winter, could routinely see thousands upon thousands going to roost from our balcony, something I affectionately dubbed the Fish Crow Superhighway.