Guanay Cormorant vs Chatham Islands Shag
Leucocarbo bougainvilliorum compared with Leucocarbo onslowi
Side-by-Side Comparison
| Attribute | Guanay Cormorant | Chatham Islands Shag |
|---|---|---|
| Scientific Name | Leucocarbo bougainvilliorum | Leucocarbo onslowi |
| Order | Suliformes | Suliformes |
| Family | Phalacrocoracidae | Phalacrocoracidae |
| Conservation Status | Near Threatened | Critically Endangered |
| Length | — | — |
| Wingspan | 58.6 cm (23.1 in) | 51.8 cm (20.4 in) |
| Weight | 2280.5 g (80.44 oz) | 2095.0 g (73.90 oz) |
| Diet | -- | -- |
| Clutch Size | 2-3 | 3 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Near Threatened
Guanay Cormorant
Critically Endangered
Chatham Islands 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.
Chatham Islands Shag
63 cm. Black and white; orange-red caruncles at bill base. Endemic to Chatham Islands, New Zealand. Critically Endangered; total population fewer than 1,000 birds. Restricted to a few Chatham Islands colonies; feeds on fish and invertebrates in surrounding coastal waters.