It has been suggested that Chatham raven be merged into this article. (Discuss) Proposed since November 2023.
New Zealand raven
Temporal range: Late Pleistocene-Holocene
Skull of Corvus antipodum pycrofti
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Aves
Order:
Passeriformes
Family:
Corvidae
Genus:
Corvus
Species:
C. antipodum
Binomial name
Corvus antipodum
(Forbes, 1893)
The New Zealand raven (Corvus antipodum) was native to the North Island and South Island of New Zealand but has been extinct since the 16th century. There were two subspecies: the North Island raven (Corvus antipodum antipodum) and the South Island raven (Corvus antipodum pycrofti). Another closely related species, the Chatham raven (Corvus moriorum), occurred on the Chatham Islands.
The holotype of the South Island raven (Corvus antipodum pycrofti) is in the collection of the Museum of New Zealand Te Papa Tongarewa.[1]
New Zealand ravens were large corvids with long, broad bills that were not as arched as those of some of the Hawaiian crows (Corvus hawaiiensis). They were significantly smaller than the Chatham Island raven, and the South Island subspecies was rather larger than the North Island subspecies.
Remains of New Zealand ravens are most common in Pleistocene and Holocene coastal sites.[2] On the coast, it may have frequented seal and penguin colonies or fed in the intertidal zone, as does the Tasmanian forest raven Corvus tasmanicus. It may also have depended on fruit, like the New Caledonian crow Corvus moneduloides, but it is difficult to understand why a fruit eater would have been most common in coastal forest and shrubland when fruit was distributed throughout the forest.
DNA evidence suggests that its closest relatives aside from the Chatham raven is the clade containing the forest raven, little raven and Australian raven, from which it split around 2 million years ago. The morphology and ossification of the palate is unusual among corvids, suggesting a unique dietary adaption, perhaps for scavenging large hard food items.[3]
A late Holocene fossil bone of Corvus antipodum was found on Enderby Island in 1964 by New Zealand biologist Elliot Dawson. It is the only authentic record of a corvid in the New Zealand Auckland Islands and is thought to represent an individual bird that reached the Auckland Islands as a vagrant.[4]
^"Corvus antipodum pycrafti; holotype; paratype". Collections Online. Museum of New Zealand Te Papa Tongarewa. Retrieved 18 July 2010.
^Tennyson, Alan; Martinson, Paul (2006-01-01). Extinct Birds of New Zealand. Te Papa Press. ISBN 978-0-909010-21-8.
^Scofield, R. Paul; Mitchell, Kieren J.; Wood, Jamie R.; De Pietri, Vanesa L.; Jarvie, Scott; Llamas, Bastien; Cooper, Alan (January 2017). "The origin and phylogenetic relationships of the New Zealand ravens". Molecular Phylogenetics and Evolution. 106: 136–143. doi:10.1016/j.ympev.2016.09.022. PMID 27677399.
^Dawson, Elliot Watson (2020-01-01). "An extinct New Zealand raven (Corvus antipodum) on the Auckland Islands - an osteographic enigma?". Notornis. 67 (1): 295–297.
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