Dwarf Bittern vs Ascension Night-heron

Ixobrychus sturmii compared with Nycticorax olsoni

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Side-by-Side Comparison

Attribute Dwarf Bittern Ascension Night-heron
Scientific Name Ixobrychus sturmii Nycticorax olsoni
Order Pelecaniformes Pelecaniformes
Family Ardeidae Ardeidae
Conservation Status Least Concern Not Evaluated
Length
Wingspan 31.2 cm (12.3 in)
Weight 140.66666666666666 g (4.96 oz) 624.57 g (22.03 oz)
Diet -- --
Clutch Size 3-4 --
Population Trend
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Habitat Comparison

Shared Habitats

Dwarf Bittern only

Ascension Night-heron only

None

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Conservation Status

Least Concern

Dwarf Bittern

Not Evaluated

Ascension Night-heron

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About These Birds

Dwarf Bittern

The Dwarf Bittern (Ixobrychus sturmii) is a small heron of the family Ardeidae endemic to sub-Saharan Africa. It is the smallest heron found regularly in Africa, measuring approximately 25–30 cm in total length — smaller even than the Least Bittern of the Americas. Adults are dark slate-gray above, including the crown, neck sides, and upperparts, while the underparts are pale buff to whitish with dark brown streaking along the center. The wings show a rufous wing patch visible in flight. …

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.

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