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Stilt-owl Temporal range: Holocene
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Strigiformes
Family:	Strigidae
Genus:	†Grallistrix
Species
Grallistrix auceps Grallistrix erdmani Grallistrix geleches Grallistrix orion

The stilt-owls (Grallistrix) is an extinct genus of true owls which contains four species, all of which lived on the Hawaiian Islands.

Grallistrix can be loosely translated as "owl on stilts". The genus received this name due to the long legs and terrestrial habits which they evolved in the absence of mammalian predators on their island homes. They fed on smaller birds such as Hawaiian honeycreepers. They were also able to fly, but likely did most of their hunting on the ground, filling the niches occupied by medium-sized predatory mammals elsewhere.

The owls were never seen alive by scientists and are known only from subfossil bones.

Species

• Kaua‘i stilt-owl, Grallistrix auceps
• Maui stilt-owl, Grallistrix erdmani
• Moloka‘i stilt-owl, Grallistrix geleches
• O‘ahu stilt-owl, Grallistrix orion

See also

• Tyto pollens
• Ornimegalonyx
• List of Late Quaternary prehistoric bird species
• List of extinct bird species since 1500
• List of fossil bird genera
• List of extinct animals
• Flightless birds

References

• Kay, E. Alison (1994). A Natural History of the Hawaiian Islands: Selected Readings II. University of Hawaii Press. ISBN 0-8248-1659-5.
• Ziegler, Alan C. (2002). Hawaiian Natural History, Ecology, and Evolution. University of Hawaii Press. ISBN 0-8248-2190-4.

External links

• http://www.extinct.minks-lang.de/7voegel/a.birdsfamilien/strigidae1.htm

v t e Genera of owls and their extinct allies
Kingdom: Animalia Phylum: Chordata Class: Aves Clade: Neoaves Clade: Passerea Clade: Telluraves
Basal Telluraves Telluraves †Lamillavis? †Zealandornithidae Zealandornis Australaves See Australaves Afroaves †Lutavis? Accipitrimorphae See Accipitrimorphae Coliiformes See Coliiformes Strigiformes See below ↓
Strigiformes incertae sedis †Ypresiglaux †Heterostrigidae Heterostrix †Ogygoptyngidae Ogygoptynx †Palaeoglaucidae Palaeoglaux †Protostrigidae "Aurorornis" Eostrix Minerva Oligostrix Primoptynx? †Sophiornitidae Berruornis? Enskenia Palaeobyas? Palaeotyto? Sophiornis Strigidae Aegolius †Alasio Asio †Asphaltoglaux Athene Bubo Glaucidium †Grallistrix Gymnasio Gymnoglaux †Intulula Jubula Ketupa Lophostrix Margarobyas Megascops Micrathene †Mioglaux †Miosurnia Ninox †Oraristrix †Ornimegalonyx Otus Pseudoscops Psiloscops Ptilopsis Pulsatrix Scotopelia Strix Surnia Taenioptynx Uroglaux Xenoglaux †Yarquen Tytonidae †Miotyto †Necrobyas †Nocturnavis Phodilus †Prosybris †Selenornis Tyto

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• Extinct birds of Hawaii
• Holocene extinctions
• Late Quaternary prehistoric birds
• Strigiformes stubs