Results 51 to 60 of about 1,055 (133)
Journal of Anatomy, Volume 248, Issue 5, Page 873-887, May 2026.Psittaciformes exhibit high levels of morphological diversity, particularly in skull and beak structure, previously linked to diet and body size. Although there were some levels of significance between diet and beak shape, body mass was a much stronger co‐variate. Diet is not determining beak shape within the clade.
Shannon L. Harrison +2 more
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Hybridization and Immunology in Animals: A Review
Ecology and Evolution, Volume 16, Issue 4, April 2026.Hybridization can reshape immune function by introducing novel genetic variation and combining parental immune traits. Across animal taxa, this process may influence resistance, tolerance, and pathogen dynamics, with important implications for disease ecology and One Health.
Cheyenne R. Graham +3 more
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Psittacine beak and feather disease virus in budgerigars and ring-neck parakeets in South Africa
Onderstepoort Journal of Veterinary Research, 2004 Psittacine beak and feather disease (PBFD) is a common disease of the psittacine species and is caused by the psittacine beak and feather disease virus (PBFDV).
J. Albertyn, K.M. Tajbhai, R.R. Bragg
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Taxonomy and diversity of Marcgraviaceae, north of the São Francisco river, northeast Brazil
Nordic Journal of Botany, Volume 2026, Issue 4, April 2026.This study provides a comprehensive assessment of Marcgraviaceae species diversity north of the São Francisco river in northeastern Brazil, analyzing species richness and distribution patterns across 384 000 km² of phytogeographic domains. Through field collections, herbarium studies (both physical and digital), and detailed morphological analyses, we ...
Thales Carvalho +4 more
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How much biotic nativeness matters across human demographic groups
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract Many central concepts of conservation biology—such as nativeness—are structured by ecological and social factors. However, the social consequences of using these concepts to make conservation decisions remain inadequately understood. Some researchers argue that nativeness, rather than acting as an objective proxy for important ecological ...
Harold N. Eyster, Rachelle K. Gould
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Variable social organization and breeding system of a social parrot revealed by genetic analysis
Ibis, Volume 168, Issue 2, Page 451-464, April 2026.Social organization and contributions to reproduction vary widely within and between species that breed in groups. Such variation often arises from the process of group formation, which drives patterns of relatedness and hence the degree of social conflict and co‐operation between group members.
Francesca S. E. Dawson Pell +4 more
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Brazilian Journal of Biology, 2002 Among the vertebrate pollinated plants, the genus Erythrina includes tree species in which birds are the pollen vectors. Two groups in this genus may be distinguished: a) the hummingbird, and b) the perching bird pollinated species. Erythrina dominguezii
RAGUSA-NETTO J.
doaj
Projected impacts of climate change on habitat availability for an endangered parakeet.
PLoS ONE, 2018 In tropical montane cloud forests, climate change can cause upslope shifts in the distribution ranges of species, leading to reductions in distributional range. Endemic species with small ranges are particularly vulnerable to such decreases in range size,
Claudia Hermes +4 more
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Chlamydophila psittaci Transmission from Pet Birds to Humans
Emerging Infectious Diseases, 2007 We studied zoonotic transmission of Chlamydophila psittaci in 39 breeding facilities for Psittaciformes (cockatoos, parrots, parakeets, lories) that frequently used antimicrobial drugs.
Daisy Vanrompay +8 more
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Invisible Victims, Invisible Crimes: Institutional Erasures of Animals as Victims of Cruelty
Law &Policy, Volume 48, Issue 2, April 2026.ABSTRACT To receive justice in the legal system, one must be seen by the legal system; this is as true for nonhuman animal victims of crime as it is for human victims. Situating animal cruelty within the invisible crimes framework, this paper highlights the paucity of research on prosecutions and sentencing under animal welfare law.
Serrin Rutledge‐Prior
wiley +1 more source