Cracticus
{{Short description|Genus of birds}}
{{Automatic taxobox
|image = Cracticus torquatus -Brisbane -garden fence-8.jpg
|image_caption = Two grey butcherbirds (Cracticus torquatus)
|taxon = Cracticus
|authority = Vieillot, 1816
| type_species = Ramphastos cassicus{{cite web |url= https://www.aviansystematics.org/4th-edition-checklist?viewfamilies=136 |title= Peltopsidae |author= |date= |website= aviansystematics.org |publisher= The Trust for Avian Systematics |access-date= 2023-07-16}}
| type_species_authority = Boddaert, 1783
|subdivision_ranks = Species
|subdivision =
|synonyms =
}}
Cracticus is a genus of butcherbirds native to Australasia. They are large songbirds, being between {{convert|30|and(-)|40|cm|abbr=on}} in length. Their colour ranges from black-and-white to mostly black with added grey plumage, depending on the species. They have a large, straight bill with a distinctive hook at the end which is used to skewer prey. They have high-pitched complex songs, which are used to defend their essentially year-round group territories: unlike birds of extratropical Eurasia and the Americas, both sexes sing prolifically.Johnson Gayle; "Vocalizations in the Grey Butcherbird Cracticus torquatus with Emphasis on Structure in Male Breeding Song: Implications for the Function and Evolution of Song from a Study of a Southern Hemisphere Species"; PhD Doctorate; Griffith University, 2003
Taxonomy
The genus Cracticus was introduced by the French ornithologist Louis Pierre Vieillot in 1816 with the hooded butcherbird (Cracticus cassicus) as the type species.{{cite book | last=Vieillot | first=Louis Pierre | author-link=Louis Pierre Vieillot | year=1816 | title=Analyse d'une Nouvelle Ornithologie Élémentaire | publisher=Deterville/self | location=Paris | page=37 | language=French| url=https://gallica.bnf.fr/ark:/12148/bpt6k9745205x/f43.image }}{{ cite book | editor1-last=Mayr | editor1-first=Ernst | editor1-link=Ernst Mayr | editor2-last=Greenway | editor2-first=James C. Jr | year=1962 | title=Check-list of Birds of the World | volume=15 | publisher=Museum of Comparative Zoology | place=Cambridge, Massachusetts | page=166 | url=https://biodiversitylibrary.org/page/14485539 }} The name is from the Ancient Greek kraktikos meaning "noisy" or "clamorous".{{cite book | last=Jobling | first=James A. | year=2010| title=The Helm Dictionary of Scientific Bird Names | publisher=Christopher Helm | location=London | isbn=978-1-4081-2501-4 | page=120 }}
Together with three species of currawong (Strepera) and two species of Peltops, the black butcherbird (Melloria quoyi), and the Australian magpie (Gymnorhina tibicen), they form the subfamily Cracticinae within the family Artamidae.
| class="wikitable" | |||
| Image | Scientific name | Common Name | Distribution |
|---|---|---|---|
| 120px | Cracticus torquatus | Grey butcherbird | Australia |
| 120px | Cracticus argenteus | Silver-backed butcherbird | northern Australia |
| 120px | Cracticus cassicus | Hooded butcherbird | New Guinea. |
| Cracticus louisiadensis | Tagula butcherbird | Tagula Island in Papua New Guinea. | |
| 120px | Cracticus mentalis | Black-backed butcherbird | southern New Guinea and Cape York Peninsula. |
| 120px | Cracticus nigrogularis | Pied butcherbird | Australia. |
The black butcherbird, Melloria quoyi, is sometimes called Cracticus quoyi.{{cite web |title=ITIS Standard Report Page: Cracticus quoyi |url=https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=559556#null |website=www.itis.gov |publisher=Integrated Taxonomic Information System (ITIS) |accessdate=6 December 2018}}
Biology
They are insect eaters for the most part, but will also feed on small lizards and other vertebrates. They get their name from their habit of impaling captured prey on a thorn, tree fork, or crevice. This "larder" is used to support the victim while it is being eaten, to store prey for later consumption, or to attract mates.
They are the ecological counterparts of the shrikes, mainly found in Eurasia and Africa, which are only distantly related, but share the "larder" habit; shrikes are also sometimes called "butcherbirds". They live in a variety of habitats from tropical rainforest to arid shrubland. Like many similar species, they have adapted well to urbanisation and can be found in leafy suburbs throughout Australia. They are opportunistic, showing little fear and readily taking food offerings to the point of becoming semi-tame.
Females lay between two and five eggs in a clutch,Jetz, Walter; Sekercioğlu, Cagan H. and Böhning-Gäse, Katrin; [http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.0060303 "The Worldwide Variation in Avian Clutch Size across Species and Space"] Supplementary Material S4 with the larger clutch sizes in more open-country species. Except in the rainforest-dwelling hooded and black butcherbirds,Coates BJ (1990) The birds of Papua New Guinea including the Bismarck Archipelago and Bougainville: Volume II. Passerines. Dove Publications: Alderley, Queensland cooperative breeding occurs, with many individuals delaying dispersal to rear young.Rowley, Ian (1976); "Co-operative breeding in Australian birds" in Proceedings of the 16th International Ornithological Congress. (ed. Frith HJ, Calaby JH) pp. 657-666. Australian Academy of Science: Canberra. The nest is made from twigs, high up in a fork of a tree. The young will remain with their mother until almost fully grown. They tend to trail behind their mother and "squeak" incessantly while she catches food for them.
References
{{Reflist}}
External links
- [http://ibc.lynxeds.com/family/butcherbirds-cracticidae Butcherbird videos] on the Internet Bird Collection
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