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Clinical assessment revealed partial agenesis of the forelimbs, bilateral asymmetric syndactyly, and selective anonychia of the second digit in both pelvic limbs. Despite severe locomotor limitations and the inability to fly, the individual maintained a satisfactory body condition score, demonstrating the species\u2019 adaptive and behavioural capacity. The integrity of the epithelial tissues and the symmetry of the digital alterations support a teratogenic etiology, distinguishing the condition from traumatic lesions. The absence of macroscopic chromosomal abnormalities suggests that these anomalies may be associated with environmental factors or point mutations. This report highlights the importance of wildlife rehabilitation and triage centers in detecting sentinel alterations, serving as an alert for wildlife conservation regarding potential environmental contaminants that may impair embryonic development in anthropogenic landscapes.\n                  <\/jats:p>","DOI":"10.1007\/s11259-026-11531-7","type":"journal-article","created":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T03:50:44Z","timestamp":1789789844000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Multiple congenital malformations in a burrowing owl (Athene cunicularia) from Southern Brazil"],"prefix":"10.1007","volume":"50","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-2885-4559","authenticated-orcid":false,"given":"Giovanna Pugioli","family":"Comine","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4898-7428","authenticated-orcid":false,"given":"Eduarda Al\u00e9xia Nunes Louzada Dias","family":"Cavalcanti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6856-2152","authenticated-orcid":false,"given":"Rafael","family":"Kretschmer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-9145-0428","authenticated-orcid":false,"given":"Matheus Giannechini","family":"Medeiros","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8452-5490","authenticated-orcid":false,"given":"Raqueli Teresinha","family":"Fran\u00e7a","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,9,19]]},"reference":[{"key":"11531_CR1","volume-title":"Alberta Burrowing Owl Recovery Plan 2012\u20132017","author":"Alberta Environment and Sustainable Resource Development","year":"2012","unstructured":"Alberta Environment and Sustainable Resource Development (2012) Alberta Burrowing Owl Recovery Plan 2012\u20132017. 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Universidade Estadual Paulista. http:\/\/hdl.handle.net\/11449\/99494 Dissertation"}],"container-title":["Veterinary Research Communications"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s11259-026-11531-7.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s11259-026-11531-7","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s11259-026-11531-7.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,24]],"date-time":"2026-10-24T04:44:23Z","timestamp":1792817063000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s11259-026-11531-7"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,9,19]]},"references-count":47,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2026,12]]}},"alternative-id":["11531"],"URL":"https:\/\/doi.org\/10.1007\/s11259-026-11531-7","relation":{},"ISSN":["0165-7380","1573-7446"],"issn-type":[{"value":"0165-7380","type":"print"},{"value":"1573-7446","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,9,19]]},"assertion":[{"value":"19 July 2026","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"14 September 2026","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"19 September 2026","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"This study was approved by the Ethics Committee on the Use of Animals of the Federal University of Pelotas (CEUA\/UFPel) under protocol number 007519\/2023-71. The wild specimen described in this report was admitted to and handled at the Wildlife Rehabilitation Centre (NURFS\/UFPel) as part of routine veterinary clinical care, and all procedures adhered strictly to national regulations on animal medicine and welfare.","order":1,"name":"Ethics","label":"Ethics Approval","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Not applicable.","order":2,"name":"Ethics","label":"Consent to Participate","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Not applicable.","order":3,"name":"Ethics","label":"Consent for publication","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The authors declare no competing interests.","order":4,"name":"Ethics","label":"Competing interests","group":{"name":"EthicsHeading","label":"Declarations"}}],"article-number":"581"}}