| Reference no. | Description | year | Name used | Page |
|---|---|---|---|---|
| 84934 | Enticott, J. and D. Tipling 1997 Seabirds of the World: the complete reference. Singapore: New Holland (Publishers) Ltd. 234 p. | 1997 | Rynchops niger | 212 |
| 87784 | Schreiber, E.A. and J. Burger 2001 Biology of marine birds. Boca Raton, Florida: CRC Press. 722 p. | 2001 | Rynchops niger | --> |
| 114902 | Sibley, D. 2003 The Sibley Field Guide to Birds of Western North America. Alfred A. Knopf, Inc., 471 p. | 2003 | Rynchops niger | 206 |
| 116102 | Gallardo, J.C., V. Macias and E. Velarde 2009 Birds (Vertebrata: Aves) of the Gulf of Mexico. pp. 1321-1342 In Felder, D.L.; Camp, D.K. (eds.) Gulf of Mexico - Origins, Waters, and Biota. Biodiversity. Texas A&M University Press, College Station, Texas. | 2009 | Rynchops niger | 1338 |
| 127697 |
IUCN 2022 The IUCN Red List of Threatened Species. Version 2022-1. |
2022 | Rynchops niger | --> |
| 130435 | IUCN 2025 The IUCN Red List of Threatened Species. 1964 - onwards. https://www.iucnredlist.org/ | 2025 | Rynchops niger | ver.2025-1 |
| 3477 | MarineSpecies.org 2050 MarineSpecies.org. http://www.marinespecies.org/index.php | 2050 | Rynchops niger | --> |