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| Cathartes | |
|---|---|
| Name | Cathartes |
| Regnum | Animalia |
| Phylum | Chordata |
| Classis | Aves |
| Ordo | Accipitriformes |
| Familia | Cathartidae |
| Genus | Cathartes |
Cathartes is a genus of New World vultures historically recognized for scavenging behavior and carrion specialization, with species distributed across the Americas. Members of this genus have been treated in comparative studies alongside taxa such as Coragyps atratus, Vultur gryphus, Gymnogyps californianus and have figured in ecological research involving institutions like the Smithsonian Institution, National Audubon Society, and conservation programs by World Wildlife Fund. Systematic debates over relationships with Old World vultures have involved scientists affiliated with the American Museum of Natural History, Royal Society, and regional universities in Brazil, Argentina, and United States.
The genus has been placed within the family Cathartidae in treatments by authors at the British Museum, American Ornithological Society, and contributors to the Handbook of the Birds of the World, while molecular phylogenies from laboratories at Harvard University, University of California, Berkeley, and the Max Planck Institute have tested affinities with groups represented by Accipitridae and debated convergence with Phoenicopteridae in older morphological literature. Type species designation, binomial authorities, and revisions published in journals such as The Auk, Ibis, and Molecular Phylogenetics and Evolution reference specimens housed in collections at Natural History Museum, London, Museu Nacional (Rio de Janeiro), and the Smithsonian National Museum of Natural History. Historical taxonomists including Carl Linnaeus, John James Audubon, and later curators at American Museum of Natural History influenced nomenclatural stability, while recent work by researchers at Universidad de Buenos Aires and Universidad Nacional Autónoma de México has refined species limits and subspecific treatment.
Species in the genus display plumage, naked head morphology, and wing proportions characterized in field guides from Cornell Lab of Ornithology, National Geographic Society, and regional monographs covering Central America and South America. Morphological comparisons with specimens cataloged at Natural History Museum, London and measurements published in The Condor show adaptations for soaring analogous to those in taxa studied at California Condor recovery programs and flight ecology projects at University of Florida and University of Oxford. Vocalizations, documented by researchers at Xeno-canto and acoustic labs at Massachusetts Institute of Technology, are limited relative to passerine taxa described by Royal Society publications.
Members occur from temperate regions of the United States through Mexico, across Central America into South America, with records in countries such as Colombia, Venezuela, Brazil, Peru, and Argentina reported in surveys by BirdLife International, eBird, and national conservation agencies. Habitat use documented in studies by University of Florida, Universidad de Costa Rica, and Universidad Nacional de Colombia includes open savannas, agricultural mosaics, riparian corridors, and forest edges bordering protected areas like Yasuni National Park, Iguaçu National Park, and Everglades National Park. Range limits and seasonal movements have been mapped using telemetry projects coordinated by Cornell Lab of Ornithology, US Geological Survey, and regional NGOs.
Soaring flight behavior and thermalling strategies have been analyzed in collaboration with aerodynamics groups at California Institute of Technology, Stanford University, and flight ecology teams at University of British Columbia. Social foraging interactions involving interspecific assemblages with Coragyps atratus and Vultur gryphus have been observed in studies by National Audubon Society and published in The Auk and Journal of Avian Biology. Parasite loads and disease ecology intersect with research by Centers for Disease Control and Prevention, veterinary units at University of Georgia, and wildlife health programs at Wildlife Conservation Society investigating exposure to pathogens monitored under surveillance networks coordinated by World Organisation for Animal Health.
Dietary specialization on carrion has been quantified in stomach-content and stable-isotope studies performed at laboratories at University of Florida, University of São Paulo, and University of Cambridge; these studies reference interactions with carcasses of mammals such as Odocoileus virginianus, Sus scrofa, and livestock species overseen by agricultural agencies like United States Department of Agriculture. Foraging strategies have been compared in ecological syntheses published by Conservation Biology, Ecology Letters, and fieldwork supported by National Science Foundation grants, highlighting the genus' role in nutrient cycling in ecosystems including the Pantanal, Amazon Rainforest, and Gran Chaco.
Breeding phenology, clutch size, and fledging periods have been documented through banding and nest-monitoring programs operated by BirdLife International, US Fish and Wildlife Service, and university research groups at Universidad de San Andrés. Nest site selection in trees, cliffs, and anthropogenic structures has been reported in regional journals and conservation plans for sites like Barra de Navidad, Pantanal Matogrossense, and protected areas managed by Instituto Chico Mendes de Conservação da Biodiversidade. Longevity and survivorship data derive from long-term mark-recapture studies coordinated by ornithological societies such as the Sociedad Colombiana de Ornitología.
Conservation assessments by IUCN and national lists maintained by agencies in the United States, Brazil, and Argentina note variable status among species subjected to threats including habitat conversion linked to projects by entities such as Braskem and agricultural expansion documented by Food and Agriculture Organization. Threat factors addressed in recovery planning by US Fish and Wildlife Service, Brazilian Ministry of Environment, and NGOs like World Wildlife Fund include poisoning incidents, collision with infrastructure overseen by Federal Aviation Administration, and loss of carrion resources due to changes in livestock management promoted by International Fund for Agricultural Development. Conservation actions recommended in policy briefs from BirdLife International, academic collaborations at University of Oxford, and community-based programs in Peru and Mexico emphasize monitoring, legal protection, and public outreach.
Category:Bird genera