Kanadareiher vs Ascension Night-heron
Ardea herodias verglichen mit Nycticorax olsoni
Side-by-Side Comparison
| Merkmal | Kanadareiher | Ascension Night-heron |
|---|---|---|
| Wissenschaftlicher Name | Ardea herodias | Nycticorax olsoni |
| Ordnung | Pelecaniformes | Pelecaniformes |
| Familie | Ardeidae | Ardeidae |
| Erhaltungsstatus | Least Concern | Not Evaluated |
| Länge | 117,0 cm (46.1 in) | — |
| Flügelspannweite | 183,0 cm (72.0 in) | — |
| Gewicht | 2400,0 g (84.66 oz) | 624,57 g (22.03 oz) |
| Ernährung | Primarily fish, also frogs, snakes, small mammals, insects, and other birds. Hunts by standing motionless … | -- |
| Gelegegröße | 2-7 | -- |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Gemeinsame Lebensräume
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Kanadareiher only
Ascension Night-heron only
Kanadareiher
Wetlands of all types including marshes, swamps, riverbanks, lake edges, and coastal shores. Also hunts in fields and meadows.
Song & Call Comparison
Kanadareiher
Deep, harsh, croaking 'frahnk-frahnk' call in flight. Also gives low guttural grunts at the nest. Alarmed birds give repeated croaks. Mostly silent for such a large wader.
Ascension Night-heron
Geographic Range & Migration
Kanadareiher
North and Central America from Alaska and southern Canada to the Caribbean and Galapagos Islands.
Ascension Night-heron
Erhaltungsstatus
Kanadareiher
Ascension Night-heron
How to Tell Them Apart
Kanadareiher
Blue-grey body with a white head bearing a broad black stripe extending to a long black plume. Rufous-brown thighs. In flight, the neck is folded into an S-shape.
Long, dagger-like yellowish bill
Ascension Night-heron
About These Birds
Kanadareiher
Der Kanadareiher ist mit einer Höhe von bis zu 1,4 Metern der größte Reiher Nordamerikas. Diese geduldigen Jäger können lange Zeit reglos verharren, bevor sie mit bemerkenswerter Geschwindigkeit nach Beute stoßen. Sie brüten in großen Kolonien, sogenannten Reiherkolonien, und kehren oft Jahr für Jahr an denselben Ort zurück.
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.