Guanay Cormorant vs Rough-faced Shag
Leucocarbo bougainvilliorum compared with Leucocarbo carunculatus
Side-by-Side Comparison
| Attribute | Guanay Cormorant | Rough-faced Shag |
|---|---|---|
| Scientific Name | Leucocarbo bougainvilliorum | Leucocarbo carunculatus |
| Order | Suliformes | Suliformes |
| Family | Phalacrocoracidae | Phalacrocoracidae |
| Conservation Status | Near Threatened | Vulnerable |
| Length | — | — |
| Wingspan | 58.6 cm (23.1 in) | 57.6 cm (22.7 in) |
| Weight | 2280.5 g (80.44 oz) | 2577.5 g (90.92 oz) |
| Diet | -- | -- |
| Clutch Size | 2-3 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Near Threatened
Guanay Cormorant
Vulnerable
Rough-faced Shag
About These Birds
Guanay Cormorant
76 cm. Black above; white underparts; black facial skin; yellow bill. Breeds Peruvian and Chilean coast; one of the most abundant South American seabirds. Feeds on anchovy in Humboldt Current. Produces massive guano deposits; colonies of millions historically. Near Threatened; sensitive to El Niño.
Rough-faced Shag
65–70 cm. Black above; white below; prominent orange-red facial caruncles. Endemic to Cook Strait area, New Zealand. Vulnerable; small fragmented population. Feeds on fish and invertebrates in coastal waters. Colonial nester on cliff ledges; distinct from other New Zealand shags.