Clinical and behavioral markers of feather picking in trafficked Golden-capped parakeet (Aratinga auricapillus) in Brazil
DOI:
https://doi.org/10.5380/avs.v31i1.99700Keywords:
behavior; biology; captive birds; hematology; psittacines; sex.Abstract
Feather-damaging behavior (FDB) is a frequent condition in psittacines under human care, with implications for animal welfare and post-rehabilitation evaluation. This case study documents behavioral, clinical, hematological, and sex-related patterns in 10 Aratinga auricapillus individuals held at the Wild Animal Screening Center in Vitória da Conquista, Bahia, Brazil. Birds were housed under standardized conditions and assessed using feather condition scoring, molecular sexing, leukocyte profiling, pathogen screening, and open-field tests. Five individuals exhibited plumage damage consistent with self-inflicted feather picking, predominantly affecting the chest, back, and legs. All feather-damaged individuals were female; all males presented intact plumage. Microscopy confirmed structural feather degradation, and no ectoparasites or infectious agents were detected. Feather-damaged birds showed modestly higher heterophil-to-lymphocyte ratios, suggesting increased physiological stress. However, these differences were modest and did not show statistical support for an association with feather condition. Temperament profiles (shy vs. bold) were evenly distributed and showed no apparent relation to feather condition. These findings suggest a sex-biased expression of FDB in A. auricapillus and reinforce the utility of integrated clinical, behavioral, and physiological assessments in triage routines. Although preliminary, the present study provides baseline reference data for future evaluations of confiscated psittacines, offering practical guidance for rehabilitation and release programs, based on the presented index of feather degradation.
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