| Book name (en) | A Monograph of the Trochilidae,or Family of Humming-birds |
| Book volume | Vol.3 |
| Identifier | 3-66 |
| Gould Scientific name | Oxypogon guerinii |
| Scientific name | Oxypogon guerinii |
| Gould name (en) | Guerin's Helmet-crest |
| Name (en) | Green-bearded Helmetcrest |
| Order | APODIFORMES |
| Family | Trochilidae |
