Spilornis perplexus (Ryu Kyu Serpent-eagle)

Ryu Kyu Serpent-eagle

Spilornis perplexus Swann, HK 1922

The crested serpent eagle is a medium-sized bird of prey that is found in forested habitats across tropical Asia. Within its widespread range across the Indian Subcontinent, Southeast Asia and East Asia, there are considerable variations and some authorities prefer to treat several of its subspecies as completely separate species. In the past, several species including the Philippine serpent eagle, Andaman serpent eagle and South Nicobar serpent eagle were treated as subspecies of the Crested serpent eagle. All members within the species complex have a large looking head with long feathers on the back of the head giving them a maned and crested appearance. The face is bare and yellow joining up with the ceres while the powerful feet are unfeathered and heavily scaled. They fly over the forest canopy on broad wings and tail have wide white and black bars. They call often with a loud, piercing and familiar three or two-note call. They often feed on snakes, giving them their name and are placed along with the Circaetus snake-eagles in the subfamily Circaetinae. Source: Wikipedia

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Classification

Order:
  Accipitriformes
Family:
  Accipitridae
Genus:
   Spilornis
Scientific:
  Spilornis perplexus

Original description

Citation:
Swann, HK 1922

Reference:
Synops. Accipitres ed. 2

Protonym:
Spilornis cheela perplexus

Type locality:
'Triomate Yayeyama, S. Loo Choo Is.' = Yayeyama, Iriomote Island, Riukiu Islands.

Link:
https://www.biodiversitylibrary.org/item/43722#page/147/mode/1up

Avibase identifiers

Avibase ID:
6C8C2A30F9445B4D

Avibase ID:
avibase-6C8C2A30

Short link:
https://avibase.ca/6C8C2A30

Taxonomic Serial Number:
TSN: 825051

Geographic range:

Spilornis perplexus: southern Ryukyu Islands (southern Japan)

Source: Clements checklist

English:
Ryu Kyu Serpent-eagle
Danish:
Ryukyuslangeørn
French:
Serpentaire des Ryu Kyu
Italian:
Serpentario delle Ryukyu
Japanese (romaji):
kanmuriwashi

Authorities recognizing this taxonomic concept:

Avibase taxonomic concepts (current): Ryu Kyu Serpent-eagle ( Spilornis perplexus) [version 1]
Avibase taxonomic concepts v. 2023 (May 2023): Ryu Kyu Serpent-eagle ( Spilornis perplexus) [version 1]
Avibase taxonomic concepts v. 2024 (Oct 2024): Ryu Kyu Serpent-eagle ( Spilornis perplexus) [version 1]
Avibase taxonomic concepts v. 01 (August 2013): Ryu Kyu Serpent-eagle ( Spilornis perplexus) [version 1]
Avibase taxonomic concepts v. 02 (May 2014): Ryu Kyu Serpent-eagle ( Spilornis perplexus) [version 1]
Avibase taxonomic concepts v. 03 (March 2015): Ryu Kyu Serpent-eagle ( Spilornis perplexus) [version 1]
Avibase taxonomic concepts v. 04 (Aug 2016): Ryu Kyu Serpent-eagle ( Spilornis perplexus) [version 1]
Avibase taxonomic concepts v. 05 (Jan 2017): Ryu Kyu Serpent-eagle ( Spilornis perplexus) [version 1]
Avibase taxonomic concepts v. 06 (Feb 2018): Ryu Kyu Serpent-eagle ( Spilornis perplexus) [version 1]
Avibase taxonomic concepts v. 07 (Feb 2020): Ryu Kyu Serpent-eagle ( Spilornis perplexus) [version 1]
Avibase taxonomic concepts v. 08 (Feb 2021): Ryu Kyu Serpent-eagle ( Spilornis perplexus) [version 1]
HBW and BirdLife Taxonomic Checklist v5 (Dec 2020): Spilornis cheela perplexus [version 1]
HBW and BirdLife Taxonomic Checklist v6 (Dec 2021): Spilornis cheela perplexus [version 1]
HBW and BirdLife Taxonomic Checklist v6b (Jul 2022): Spilornis cheela perplexus [version 1]
HBW and BirdLife Taxonomic Checklist v7 (Dec 2022): Spilornis cheela perplexus [version 1]
HBW and BirdLife Taxonomic Checklist v8 (Dec 2023): Spilornis cheela perplexus [version 1]
HBW and BirdLife Taxonomic Checklist v9 (Oct 2024): Spilornis cheela perplexus [version 1]
Commission internationale pour les noms français des oiseaux (1993): Serpentaire des Ryu Kyu ( Spilornis perplexus) [version 1]
Clements, version 2021: Spilornis cheela perplexus [version 1]
Clements, version 2022: Spilornis cheela perplexus [version 1]
Clements, version 2023: Spilornis cheela perplexus [version 1]
Clements, version 2024: Spilornis cheela perplexus [version 1]
Clements 5th edition (as published): Spilornis cheela perplexus [version 1]
Clements 5th edition (incl. 2000 revisions): Spilornis cheela perplexus [version 1]
Clements 5th edition (incl. 2001 revisions): Spilornis cheela perplexus [version 1]
Clements 5th edition (incl. 2002 revisions): Spilornis cheela perplexus [version 1]
Clements 5th edition (incl. 2003 revisions): Spilornis cheela perplexus [version 1]
Clements 5th edition (incl. 2004 revisions): Spilornis cheela perplexus [version 1]
Clements 5th edition (incl. 2005 revisions): Spilornis cheela perplexus [version 1]
Clements 6th edition: Spilornis cheela perplexus [version 1]
Clements 6th edition (incl. 2007 revisions): Spilornis cheela perplexus [version 1]
Clements 6th edition (incl. 2008 revisions): Spilornis cheela perplexus [version 1]
Clements 6th edition (incl. 2009 revisions): Spilornis cheela perplexus [version 1]
Clements 6th edition (version 6.5 incl. 2010 revisions): Spilornis cheela perplexus [version 1]
Clements 6th edition (version 6.6 incl. 2011 revisions): Spilornis cheela perplexus [version 1]
Clements 6th edition (version 6.7 incl. 2012 revisions): Spilornis cheela perplexus [version 1]
Clements 6th edition (version 6.8 incl. 2013 revisions): Spilornis cheela perplexus [version 1]
Clements 6th edition (version 6.9 incl. 2014 revisions): Spilornis cheela perplexus [version 1]
Clements, version 2015: Spilornis cheela perplexus [version 1]
Clements, version 2016: Spilornis cheela perplexus [version 1]
Clements, version 2017: Spilornis cheela perplexus [version 1]
Clements, version 2018: Spilornis cheela perplexus [version 1]
Clements, version 2019: Spilornis cheela perplexus [version 1]
eBird version 1.52: Crested Serpent-Eagle (Ryukyu) ( Spilornis cheela perplexus) [version 1]
eBird version 1.53: Crested Serpent-Eagle (Ryukyu) ( Spilornis cheela perplexus) [version 1]
eBird version 1.54: Crested Serpent-Eagle (Ryukyu) ( Spilornis cheela perplexus) [version 1]
eBird version 1.55: Crested Serpent-Eagle (Ryukyu) ( Spilornis cheela perplexus) [version 1]
eBird version 2015: Crested Serpent-Eagle (Ryukyu) ( Spilornis cheela perplexus) [version 1]
eBird version 2016: Crested Serpent-Eagle (Ryukyu) ( Spilornis cheela perplexus) [version 1]
eBird version 2017: Crested Serpent-Eagle (Ryukyu) ( Spilornis cheela perplexus) [version 1]
eBird version 2018: Crested Serpent-Eagle (Ryukyu) ( Spilornis cheela perplexus) [version 1]
eBird version 2019: Crested Serpent-Eagle (Ryukyu) ( Spilornis cheela perplexus) [version 1]
eBird version 2021: Crested Serpent-Eagle (Ryukyu) ( Spilornis cheela perplexus) [version 1]
eBird version 2022: Crested Serpent-Eagle (Ryukyu) ( Spilornis cheela perplexus) [version 1]
eBird version 2023: Crested Serpent-Eagle (Ryukyu) ( Spilornis cheela perplexus) [version 1]
eBird version 2024: Crested Serpent-Eagle (Ryukyu) ( Spilornis cheela perplexus) [version 1]
Howard and Moore 2nd edition: Spilornis cheela perplexus
Howard and Moore 3rd edition (as published): Spilornis cheela perplexus [version 1]
Howard and Moore 3rd edition (incl. corrigenda 1.2): Spilornis cheela perplexus [version 1]
Howard and Moore 3rd edition (incl. corrigenda 2.1): Spilornis cheela perplexus [version 1]
Howard and Moore 3rd edition (incl. corrigenda 3.1): Spilornis cheela perplexus [version 1]
Howard and Moore 3rd edition (incl. corrigenda 4): Spilornis cheela perplexus [version 1]
Howard and Moore 3rd edition (incl. corrigenda 5): Spilornis cheela perplexus [version 1]
Howard and Moore 3rd edition (incl. corrigenda 6): Spilornis cheela perplexus [version 1]
Howard and Moore 3rd edition (incl. corrigenda 7): Spilornis cheela perplexus [version 1]
Howard and Moore 3rd edition (incl. corrigenda 8): Spilornis cheela perplexus [version 1]
Howard and Moore 4th edition (vol. 1-2): Spilornis cheela perplexus [version 1]
Howard and Moore 4th edition (incl. corrigenda vol.1-2): Spilornis cheela perplexus [version 1]
Handbook of the Birds of the World (vol 1-16): Spilornis cheela perplexus [version 1]
Handbook of the Birds of the World Alive (31/01/2015): Spilornis cheela perplexus [version 1]
Handbook of the Birds of the World Alive (03/07/2017): Spilornis cheela perplexus [version 1]
Handbook of the Birds of the World and Birdlife (Dec 2017): Spilornis cheela perplexus [version 1]
Handbook of the Birds of the World and Birdlife (Dec 2018): Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 3.1: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 3.2: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 3.3: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 3.4: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 3.5: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 4.1: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 4.2: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 4.3: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 4.4: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 5.1: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 5.2: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 5.3: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 5.4: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 6.1: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 6.2: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 6.3: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 6.4: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 7.1: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 7.2: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 7.3: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 8.1: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 8.2: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 9.1: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 9.2: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 10.1: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 10.2: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 11.1: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 11.2: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 12.1: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 12.2: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 13.1: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 13.2: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 14.1: Spilornis cheela perplexus [version 1]
IOC World Bird Names, version 14.2: Spilornis cheela perplexus [version 1]
Peters' Check-list of the Birds (original): Spilornis cheela perplexus [version 4]
Peters' Check-list of the Birds (2nd edition): Spilornis cheela perplexus [version 1]
Sibley and Monroe, Birds of the World Version 2.0: Ryukyu Serpent-Eagle ( Spilornis perplexus) [version 2]
Zoonomen - Zoological Nomenclature Resource: Spilornis cheela perplexus [version 1]
Zoonomen - Zoological Nomenclature Resource: Spilornis cheela perplexus [version 1]

Taxonomic status:

Species status: full species (sometimes a subspecies)

This taxon is considered a subspecies of Spilornis [cheela, abbotti, asturinus, sipora, natunensis, baweanus or perplexus] (sensu lato) by some authors

Your sightings

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Related taxa

Alternative arrangements: 1 2 3 4

Highlight taxa in a checklist (shown in red)

Other synonyms