Partial leucism in the Variable Seedeater (Sporophila corvina) in Costa Rica.
Huitzil, 2022 Leucism is the most common plumage aberration recorded in wild birds around the world, but very few records exist for Neotropical wild bird species with black plumage.
Sergio Villegas Retana
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First records of leucism in small rodents for Argentina [PDF]
Therya Notes, 2020 Leucism appears in various groups of vertebrates, although it is rare in mammals. For Argentina, we do not know of any documented registry for small rodents.
Beninato Bustamante, Veronica Alejandra +4 more
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Color aberration in malachite kingfishers: Insights from community science observations in Queen Elizabeth National Park, Uganda [PDF]
Ecology and EvolutionColor aberrations in birds corresponds with important ecological functions, including thermoregulation and physiological impacts, camouflage and increased predation, and social interactions with conspecifics. Color aberrations in birds have been reported
Bethany H. Warner +2 more
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Chromaticaberration record of Sula leucogaster in Western South Atlantic [PDF]
Brazilian Journal of Aquatic Science and TechnologyThis technical note reports the record of a leucistic Brow Booby (Sula leucogaster) in March 2024 in Rio de Janeiro, southeastern Brazil. This record expands knowledge about the occurrence and distribution of leucistic individuals of the species in the ...
Albuquerque, Luiz Eduardo +3 more
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First record of leucism in the Dasyprocta fuliginosa (Dasyproctidae, Rodentia) in Ecuador
Biota Colombiana, 2019 Leucism is a congenital hypopigmentary disorder that has been described in several species of wild mammals, as an abnormal and unusual condition.
Edison Gabriel Mejía Valenzuela
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Breeding pairs with color aberrations in oriental reed warblers [PDF]
Ecology and EvolutionIn 2017, one pair of Oriental reed warblers (Acrocephalus orientalis) with color aberrations was found in Yongnianwa National Wetland Park, Hebei, China. The female bird exhibited white feathers on the head, neck, and upper back, and the base of the beak
Laikun Ma +4 more
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Partial leucism in the Black Phoebe (Sayornis nigricans): first record for Mexico
Huitzil, 2018 Leucism is the partial loss of pigmentation. It can be expressed totally or partially in the plumage. We recorded an adult individual of the Black Phoebe (Sayornis nigricans) with partial leucism.
A. Janette Rodríguez-Casanova +2 more
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First record of leucism in spotted eagle ray, Aetobatus narinari (Elasmobranchii, Myliobatiformes, Aetobatidae) [PDF]
Acta Ichthyologica et PiscatoriaThis paper reports the first record of leucism in the spotted eagle ray, Aetobatus narinari (Euphrasen, 1790). The specimen was captured on the coast of Seybaplaya, Campeche, on 15 August 2025, using a 20 cm mesh-size gillnet.
Armando T. Wakida-Kusunoki +4 more
doaj +4 more sources
Aberrant Pigmentation in a Schooling Cownose Ray (<i>Rhinoptera bonasus</i>) in Chesapeake Bay, Virginia, USA. [PDF]
Ecol EvolWe report a rare case of aberrant pigmentation in a cownose ray (Rhinoptera bonasus) observed schooling naturally within Chesapeake Bay, Virginia. Drone and in‐water imagery revealed a piebald‐like pattern without any disruption to coordinated group behavior, providing the first in situ evidence that pigmentation anomalies in this species do not ...
Bennett-Smith MF +4 more
europepmc +2 more sources
Report of leucism in Tamandua mexicana (Pilosa: Myrmecophagidae) from southeastern Mexico
XenarthraColoration anomalies caused by melanin deficiency are rare in wild mammals and often increase predation risk. We document a case of leucism in an adult female Tamandua mexicana from the Reserva Cuxtal, Yucatán, Mexico.
Javier A. Ortiz-Medina +3 more
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