Ascension Night-heron vs Whistling Heron
Nycticorax olsoni compared with Syrigma sibilatrix
Side-by-Side Comparison
| Attribute | Ascension Night-heron | Whistling Heron |
|---|---|---|
| Scientific Name | Nycticorax olsoni | Syrigma sibilatrix |
| Order | Pelecaniformes | Pelecaniformes |
| Family | Ardeidae | Ardeidae |
| Conservation Status | Not Evaluated | Least Concern |
| Length | — | — |
| Wingspan | — | 58.0 cm (22.8 in) |
| Weight | 624.57 g (22.03 oz) | 462.5 g (16.31 oz) |
| Diet | -- | -- |
| Clutch Size | -- | 3-4 |
| Population Trend | — | — |
Habitat Comparison
Shared Habitats
None
Ascension Night-heron only
Whistling Heron only
Conservation Status
Not Evaluated
Ascension Night-heron
Least Concern
Whistling Heron
About These Birds
Ascension Night-heron
The Ascension Night-heron was a flightless heron known from subfossil remains on Ascension Island in the South Atlantic. Weighing an estimated 624g, it was likely driven to extinction by human activity and introduced predators. It is currently listed as Not Evaluated by conservation assessments.