FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1445052883> ?p ?o ?g. }

• W1445052883 abstract "Chowchillas, Orthonyx spaldingii, are a common inhabitant of the World Heritage-listed Wet Tropics of North Queensland and are confined to the Australian tropical rainforests. They are sedentary and groups of two to five birds defend year-round all-purpose territories. They forage as a group and cooperate in territory defence but do not appear to breed cooperatively. The main focus of this study was to investigate what ecological and other factors could be involved in causing Chowchillas to live in groups but not breed cooperatively. I examined patterns of food availability, foraging strategies, territoriality, social behaviour and group structure in Chowchillas.Food availability over time and between sites was measured by sampling the leaf litter fauna. Food availability varied seasonally and from year-to-year but the variation was small. Food availability in patches was predictable on the basis of readily observed characteristics of the leaf litter. Chowchillas ate most types of small animals occurring in the leaf litter. They were found not to search randomly when foraging, instead choosing patches which were likely to contain more food. This strategy probably involved learning the cues which indicated patch quality.Several birds were fitted with radio-transmitters. Home ranges of two groups were mapped over several months and the home ranges of five neighbouring groups were mapped in one period. Home ranges were found to be stable over time and overlapped to some extent. Each group had a core area within their home range which was rarely encroached upon by other groups and this approximated the defended area. Home range size was larger in larger groups and the area per bird also increased with group size. Groups were stable over time. The reproductive rate was estimated at 0.27 fledged young per group per year and the survival rate was estimated at 86% annually. As a result, few young were produced during the two and a half years of the study and only one dispersal event was witnessed.Songs of groups on and near my site were recorded and analysed to examine differences between and within groups. Chowchillas were found to have song dialects and the boundaries between these dialects were sharp. Thus there is a possibility that dispersal is restricted to within dialect areas and that individuals within the same dialect area are more closely related to each other than to those in other dialect areas.I concluded that Chowchillas may not breed cooperatively because: (a) group members are unrelated so young birds would not increase their inclusive fitness by helping the breeders to raise offspring; and (b) young birds have the option of dispersing and possibly breeding on a nearby territory. However, group-territoriality can occur because: (a) young birds need to forage with experienced birds in order to find good food patches; and (b) older birds do not incur any costs by allowing them to do so and may also benefit by having help in defending the territory.The role of Chowchillas in the rainforest was also investigated. Chowchillas were found to have a major impact on the forest floor litter fauna and to turn over large quantities of leaf litter. Their activities also provide other ground-foraging animals, particularly Musky Rat-Kangaroos, with a profitable foraging niche. Thus Chowchillas are an important component of the ecology of Australia's wet tropical rainforests." @default.
• W1445052883 created "2016-06-24" @default.
• W1445052883 creator A5027361824 @default.
• W1445052883 date "1993-01-01" @default.
• W1445052883 modified "2023-09-24" @default.
• W1445052883 title "The ecology and social behaviour of chowchillas, Orthonyx spaldingii" @default.
• W1445052883 hasPublicationYear "1993" @default.
• W1445052883 type Work @default.
• W1445052883 sameAs 1445052883 @default.
• W1445052883 citedByCount "0" @default.
• W1445052883 crossrefType "dissertation" @default.
• W1445052883 hasAuthorship W1445052883A5027361824 @default.
• W1445052883 hasConcept C110872660 @default.
• W1445052883 hasConcept C125471540 @default.
• W1445052883 hasConcept C159985019 @default.
• W1445052883 hasConcept C165287380 @default.
• W1445052883 hasConcept C185933670 @default.
• W1445052883 hasConcept C18903297 @default.
• W1445052883 hasConcept C192562407 @default.
• W1445052883 hasConcept C201920390 @default.
• W1445052883 hasConcept C204323151 @default.
• W1445052883 hasConcept C205649164 @default.
• W1445052883 hasConcept C2619416 @default.
• W1445052883 hasConcept C2776482104 @default.
• W1445052883 hasConcept C2779370140 @default.
• W1445052883 hasConcept C2779429622 @default.
• W1445052883 hasConcept C45962647 @default.
• W1445052883 hasConcept C86803240 @default.
• W1445052883 hasConcept C90805937 @default.
• W1445052883 hasConceptScore W1445052883C110872660 @default.
• W1445052883 hasConceptScore W1445052883C125471540 @default.
• W1445052883 hasConceptScore W1445052883C159985019 @default.
• W1445052883 hasConceptScore W1445052883C165287380 @default.
• W1445052883 hasConceptScore W1445052883C185933670 @default.
• W1445052883 hasConceptScore W1445052883C18903297 @default.
• W1445052883 hasConceptScore W1445052883C192562407 @default.
• W1445052883 hasConceptScore W1445052883C201920390 @default.
• W1445052883 hasConceptScore W1445052883C204323151 @default.
• W1445052883 hasConceptScore W1445052883C205649164 @default.
• W1445052883 hasConceptScore W1445052883C2619416 @default.
• W1445052883 hasConceptScore W1445052883C2776482104 @default.
• W1445052883 hasConceptScore W1445052883C2779370140 @default.
• W1445052883 hasConceptScore W1445052883C2779429622 @default.
• W1445052883 hasConceptScore W1445052883C45962647 @default.
• W1445052883 hasConceptScore W1445052883C86803240 @default.
• W1445052883 hasConceptScore W1445052883C90805937 @default.
• W1445052883 hasLocation W14450528831 @default.
• W1445052883 hasOpenAccess W1445052883 @default.
• W1445052883 hasPrimaryLocation W14450528831 @default.
• W1445052883 hasRelatedWork W1978882288 @default.
• W1445052883 hasRelatedWork W2022522615 @default.
• W1445052883 hasRelatedWork W2048007908 @default.
• W1445052883 hasRelatedWork W2074055307 @default.
• W1445052883 hasRelatedWork W2085602931 @default.
• W1445052883 hasRelatedWork W2086932921 @default.
• W1445052883 hasRelatedWork W2099263076 @default.
• W1445052883 hasRelatedWork W2114760020 @default.
• W1445052883 hasRelatedWork W2115182229 @default.
• W1445052883 hasRelatedWork W2116166795 @default.
• W1445052883 hasRelatedWork W2128598212 @default.
• W1445052883 hasRelatedWork W2313635977 @default.
• W1445052883 hasRelatedWork W2329459575 @default.
• W1445052883 hasRelatedWork W2465185715 @default.
• W1445052883 hasRelatedWork W2491063839 @default.
• W1445052883 hasRelatedWork W591331508 @default.
• W1445052883 hasRelatedWork W748678336 @default.
• W1445052883 hasRelatedWork W858069632 @default.
• W1445052883 hasRelatedWork W2738701197 @default.
• W1445052883 hasRelatedWork W2989683047 @default.
• W1445052883 isParatext "false" @default.
• W1445052883 isRetracted "false" @default.
• W1445052883 magId "1445052883" @default.
• W1445052883 workType "dissertation" @default.