Mauritius kestrel
E531911
The Mauritius kestrel is a small falcon once considered the world’s rarest bird, known for its dramatic recovery from the brink of extinction on the island of Mauritius.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mauritius kestrel canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5536088 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Mauritius kestrel Context triple: [Mascarene Islands, hasEndemicSpecies, Mauritius kestrel]
-
A.
Seychelles black parrot
The Seychelles black parrot is a rare, dark-plumaged parrot species found only in the Seychelles, where it serves as the national bird and an important symbol of the islands’ unique biodiversity.
-
B.
Seychelles fody
The Seychelles fody is a small, endemic songbird of the Seychelles islands known for the male’s bright yellow plumage and its adaptation to a variety of woodland and scrub habitats.
-
C.
Aquila verreauxii
Aquila verreauxii, commonly known as Verreaux's eagle or the black eagle, is a large, predominantly black bird of prey native to mountainous and rocky regions of sub-Saharan Africa.
-
D.
Verreaux's eagle
Verreaux's eagle is a large, powerful African bird of prey known for its striking black plumage and preference for mountainous and rocky habitats where it hunts mammals such as hyraxes.
-
E.
Horsfield's bronze cuckoo
Horsfield's bronze cuckoo is a small, metallic-green parasitic cuckoo species native to Australia and nearby regions, known for laying its eggs in the nests of other birds.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Mauritius kestrel Target entity description: The Mauritius kestrel is a small falcon once considered the world’s rarest bird, known for its dramatic recovery from the brink of extinction on the island of Mauritius.
-
A.
Sisserou parrot
The Sisserou parrot, also known as the imperial amazon, is a rare and endangered parrot species endemic to Dominica and a national symbol featured on the country’s flag.
-
B.
Seychelles black parrot
The Seychelles black parrot is a rare, dark-plumaged parrot species found only in the Seychelles, where it serves as the national bird and an important symbol of the islands’ unique biodiversity.
-
C.
Seychelles fody
The Seychelles fody is a small, endemic songbird of the Seychelles islands known for the male’s bright yellow plumage and its adaptation to a variety of woodland and scrub habitats.
-
D.
Aquila verreauxii
Aquila verreauxii, commonly known as Verreaux's eagle or the black eagle, is a large, predominantly black bird of prey native to mountainous and rocky regions of sub-Saharan Africa.
-
E.
Verreaux's eagle
Verreaux's eagle is a large, powerful African bird of prey known for its striking black plumage and preference for mountainous and rocky habitats where it hunts mammals such as hyraxes.
- F. None of above. chosen
Statements (66)
| Predicate | Object |
|---|---|
| instanceOf |
bird
ⓘ
diurnal raptor ⓘ endemic species ⓘ falcon ⓘ |
| binomialName | Falco punctatus NERFINISHED ⓘ |
| bodyLength | about 26 cm ⓘ |
| breedingSeason | austral spring ⓘ |
| class | Aves ⓘ |
| clutchSize | 2–5 eggs ⓘ |
| coloration |
bluish-grey upperparts
ⓘ
rufous underparts with dark spotting ⓘ |
| commonName | Mauritius kestrel NERFINISHED ⓘ |
| conservationMilestone |
considered a major conservation success story
ⓘ
population exceeded 300 individuals by the 1990s ⓘ |
| conservationProgramCountry | Mauritius NERFINISHED ⓘ |
| conservationProgramLedBy | Durrell Wildlife Conservation Trust NERFINISHED ⓘ |
| conservationStatus | Endangered ⓘ |
| conservationStatusSystem | IUCN Red List NERFINISHED ⓘ |
| currentRange | southwestern Mauritius ⓘ |
| describedBy | Johann Friedrich Gmelin NERFINISHED ⓘ |
| diet |
geckos
ⓘ
insects ⓘ small birds ⓘ small mammals ⓘ |
| distinguishingFeature | relatively short wings for a falcon ⓘ |
| endemicTo | Mauritius NERFINISHED ⓘ |
| family | Falconidae NERFINISHED ⓘ |
| flightStyle | soaring and short glides in forested ravines ⓘ |
| foundOnIsland | Mauritius NERFINISHED ⓘ |
| genus | Falco NERFINISHED ⓘ |
| habitat |
cliff habitat
ⓘ
native forest ⓘ plantation mosaic landscapes ⓘ ravine forest ⓘ |
| historicalRange | much of Mauritius ⓘ |
| huntingStrategy |
perch hunting
ⓘ
short pursuit flights ⓘ |
| iucnCategory | EN ⓘ |
| kingdom | Animalia ⓘ |
| listedOn | CITES Appendix I NERFINISHED ⓘ |
| minimumWildPopulation | 4 individuals in the 1970s ⓘ |
| nativeTo | Mauritius NERFINISHED ⓘ |
| nestSite |
cliff ledges
ⓘ
nest boxes ⓘ tree cavities ⓘ |
| order | Falconiformes NERFINISHED ⓘ |
| phylum | Chordata ⓘ |
| populationTrend | decreasing ⓘ |
| primaryPrey | Phelsuma geckos ⓘ |
| protectedBy | Mauritian law ⓘ |
| recoveryMethod |
captive breeding
ⓘ
habitat restoration ⓘ hacking releases ⓘ nest box programs ⓘ |
| roleInEcosystem | top small-vertebrate predator in native forest ⓘ |
| sexualDimorphism | female larger than male ⓘ |
| taxonRank | species ⓘ |
| threat |
DDT contamination
ⓘ
cyclones ⓘ habitat loss ⓘ introduced predators ⓘ pesticides ⓘ |
| vocalization | high-pitched calls near nest sites ⓘ |
| wasOnceConsidered | world’s rarest bird ⓘ |
| wingspan | about 45 cm ⓘ |
| yearDescribed | 1788 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Mauritius kestrel Description of subject: The Mauritius kestrel is a small falcon once considered the world’s rarest bird, known for its dramatic recovery from the brink of extinction on the island of Mauritius.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.