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| Plegadis falcinellus | |
|---|---|
| Name | Glossy Ibis |
| Status | LC |
| Status system | IUCN3.1 |
| Genus | Plegadis |
| Species | falcinellus |
| Authority | (Linnaeus, 1766) |
Plegadis falcinellus
A widespread wading bird known as the glossy ibis appears across multiple continents and is recognized for its iridescent plumage and long decurved bill. It has been observed in association with numerous famous wetlands, reserves, and research programs and figures connected to avifaunal study and conservation. Ornithologists, naturalists, and institutions have documented its migrations, habitat preferences, and interactions with other iconic taxa in diverse regions.
Described by Carl Linnaeus in the 18th century, the species was placed in a genus alongside related ibises and has been considered in revisions by taxonomists from John Gould-era catalogues to modern treatments by institutions such as the Smithsonian Institution, Natural History Museum, London, American Museum of Natural History, and the British Ornithologists' Union. Its specific epithet derives from classical Latin and was stabilized through works by Georg Forster and other early naturalists. Modern molecular studies by researchers affiliated with universities like University of Cambridge, Harvard University, University of Oxford, and laboratories collaborating with the Max Planck Society and Smithsonian Institution have clarified relationships among Pelecaniformes and related groups historically discussed at gatherings such as the International Ornithological Congress.
Adults show a slender body, long neck, and a curved bill, with glossy chestnut and green iridescence notable in older plumage; field guides produced by the Royal Society for the Protection of Birds, Cornell Lab of Ornithology, BirdLife International, and the National Audubon Society detail these features. Size and mass comparisons are routinely included in manuals used by researchers from institutions like the Field Museum, Australian Museum, and Muséum national d'Histoire naturelle in Paris. Juveniles lack the adult sheen and are often compared in identification keys used by birders tracking species documented in works by David Attenborough, Roger Tory Peterson, and contributors to the Handbook of the Birds of the World. Vocalizations and flight silhouette are described in audio atlases archived by British Library, Xeno-canto community, and media collections curated by BBC Natural History Unit.
This species has a nearly cosmopolitan distribution recorded in checklists maintained by organizations including BirdLife International, the International Union for Conservation of Nature, the European Bird Census Council, and national agencies such as the United States Fish and Wildlife Service, Environment Canada, and the Australian Department of Agriculture, Water and the Environment. It occupies freshwater and brackish wetlands cataloged in global databases for sites like the Everglades National Park, Wadden Sea, Okavango Delta, Caspian Sea, Danube Delta, Chilika Lake, Camargue, Sundarbans, Doñana National Park, and Murray-Darling Basin. Range expansions and vagrant records have been noted in ornithological records associated with institutions such as Royal Ontario Museum, National Geographic Society, Zoological Society of London, and regional bird clubs including the Audubon Society and Royal Society for the Protection of Birds.
Foraging behavior in shallow water and emergent vegetation has been studied in ecosystems managed by agencies such as National Park Service, Wetlands International, and research programs at universities like University of California, Davis, Wageningen University, and University of Pretoria. Diet includes invertebrates and small vertebrates similar to prey items documented in studies by researchers linked to Smithsonian Tropical Research Institute and published in journals with editorial boards from institutions like Oxford University Press and Cambridge University Press. Interactions with co-occurring taxa such as herons recorded by ornithologists from the Royal Society and collaborative surveys coordinated with the Ramsar Convention reveal mixed-species feeding flocks, roosting at sites monitored by conservation NGOs like Conservation International and The Nature Conservancy. Seasonal movements and habitat use have also been the subject of telemetry and banding projects run by groups including the British Trust for Ornithology, Canadian Wildlife Service, and the African Bird Club.
Nesting in colonies within reeds, mangroves, and trees has been documented at protected areas like the Everglades National Park, Kuyalnik Estuary, Sundarbans, and reserves monitored by the Danish Ornithological Society and Wetlands International. Clutch size, incubation, and fledging parameters are summarized in breeding atlases compiled by the European Bird Atlas, Atlas of Southern African Birds, and regional compendia from the Australian Bird and Bat Banding Scheme. Breeding phenology has been influenced by hydrological regimes managed by authorities such as the U.S. Army Corps of Engineers in North America and water resource agencies like Central Water Commission (India) in South Asia, affecting timing documented by researchers at universities including University of Stellenbosch and Jawaharlal Nehru University.
Assessed as Least Concern by the International Union for Conservation of Nature, the species nonetheless faces threats at sites impacted by development projects overseen by entities such as the World Bank, Asian Development Bank, and national ministries of environment. Habitat loss, pollution, and disturbance at wetlands listed by the Ramsar Convention and impacted by climate variability studied by groups including the Intergovernmental Panel on Climate Change have been cited by conservationists from BirdLife International, Wetlands International, and NGOs like Friends of the Earth. Protective measures are implemented through strategies developed by national parks and agencies including the U.S. Fish and Wildlife Service, Environment Agency (UK), and regional conservation programs supported by foundations such as the Gordon and Betty Moore Foundation and McArthur Foundation.