Identifying Neotropic Cormorant and Double-crested Cormorant Use these tips and photos to distinguish between these two similar cormorant species. To access this content, you must purchase BirdWatching Membership. Read More “Identifying Neotropic Cormorant and Double-crested Cormorant” Neotropic Cormorant, adult. April in Galveston County, Texas. Photo by Brian E. Small