{"topic_id":"exotic_tox_parrot","category":"exotic-pet-toxicology","context":"---\ntopic_id: exotic_tox_parrot\ncategory: exotic-pet-toxicology\ntitle: \"Toxicoses of pet birds (parrots and related species): lead, zinc, and PTFE\"\nlang: en\nsource: \"First-hand veterinary toxicology reference, saved to source_file; paraphrased derived fact summary per COPYRIGHT_POLICY §3. Deepened 2026-08-01.\"\nsource_file: pdf-raw/merck/pet_birds_toxicoses.txt\ndate_parsed: 2026-08-01\ntokens_estimated: 455\nverification:\n  method: paraphrase\n  claims: 8\n  passed: 8\n  date: 2026-08-01\nrecovered: false\npath: exotic-pet-toxicology/exotic_tox_parrot/01_exotic_tox_parrot.md\nsource_document: \"Merck Veterinary Manual / first-hand veterinary reference\"\ncitation:\n  authority: \"Merck Veterinary Manual / first-hand veterinary reference\"\n  title: \"Toxicoses of pet birds (parrots and related species): lead, zinc, and PTFE\"\n  url: \"https://www.merckvetmanual.com/\"\n  retrieved: \"2026-08-01\"\n  ref: \"\"\n  doc_type: \"professional veterinary reference\"\n  needs_review: false\nlicense: paraphrase\ncopyright_note: \"Source Merck Veterinary Manual (merckvetmanual.com) is a copyrighted veterinary reference and not openly licensed; per COPYRIGHT_POLICY §3 all claims are paraphrased derived fact summaries (numbers and proper nouns preserved, sentences rewritten), not verbatim quotations.\"\nauthority_tier: T3\nauthority_tier_basis: \"T3:vet-ref\"\nauthority_tier_date: 2026-08-04\n---\n\n# Toxicoses of pet birds (parrots and related species): lead, zinc, and PTFE\nSource: Merck Veterinary Manual (merckvetmanual.com), a copyrighted veterinary reference. Per COPYRIGHT_POLICY §3, the points below are paraphrased derived fact summaries: numerical values and proper nouns are preserved from the source, but sentences are rewritten and not quoted verbatim.\n\n## Claims\n\n- *[Paraphrased derived summary — non-Open-Access source.]* Lead poisoning is common in pet birds and free-ranging birds (especially waterfowl). In pets it usually follows ingesting household metals — blinds, costume jewelry, mirror backings, bird toys, hardware cloth, curtain weights.\n- *[Paraphrased derived summary — non-Open-Access source.]* Zinc poisoning is also frequent in pet birds. Sources include galvanized toys, chains, mesh, bells, keys, and pennies (post-1982). Galvanized wire is mostly zinc but may also contain lead.\n- *[Paraphrased derived summary — non-Open-Access source.]* PTFE (polytetrafluoroethylene) gas poisoning is common in birds kept in or near kitchens: overheated nonstick cookware releases the gas at about 280°C (536°F).\n- *[Paraphrased derived summary — non-Open-Access source.]* Ingested lead breaks down in the ventriculus and is then slowly released into the GI tract and bloodstream.\n- *[Paraphrased derived summary — non-Open-Access source.]* Lead is stored in soft tissue and bone and is excreted slowly over time.\n- *[Paraphrased derived summary — non-Open-Access source.]* Lead poisoning disrupts many biochemical processes in birds.\n- *[Paraphrased derived summary — non-Open-Access source.]* Signs vary with dose and may include anorexia, weight loss, regurgitation, diarrhea, depression, ataxia, weakness, seizures, blindness, polyuria, and polydipsia.\n- *[Paraphrased derived summary — non-Open-Access source.]* Diagnosis rests on clinical signs, biochemical and hematologic findings, blood lead levels, and imaging.\n---\n## License & attribution\n\nSource: Merck Veterinary Manual (merckvetmanual.com) is a copyrighted veterinary reference and is not openly licensed. Per COPYRIGHT_POLICY §3, every claim above is a paraphrased derived fact summary (numbers and proper nouns preserved, sentences rewritten), not a verbatim quotation.\n\n- https://www.merckvetmanual.com/","sources":["exotic-pet-toxicology — Toxicoses of pet birds (parrots and related species): lead, zinc, and PTFE (retrieved 2026-08-01)"],"source":{"authority":"exotic-pet-toxicology","title":"Toxicoses of pet birds (parrots and related species): lead, zinc, and PTFE","url":"https://www.merckvetmanual.com/","retrieved":"2026-08-01","ref":"","doc_type":"official PDF","source_document":"Merck Veterinary Manual / first-hand veterinary reference","verification_file":"pdf-raw/merck/pet_birds_toxicoses.txt"},"source_document":"Merck Veterinary Manual / first-hand veterinary reference","source_file":"pdf-raw/merck/pet_birds_toxicoses.txt","trust":{"authority_tier":"T3","fidelity":"paraphrase","license":"paraphrase","display_grade":"B"},"tokens_estimated":165,"generated_at":null,"tip":"Use /api/v1/topics to discover more topics. /api/v1/nutrient for precise single-point queries. /api/v1/cross_compare for 2-3 standard comparisons."}