Endoparasites in Peregrine Falcons

Bird · Falco peregrinus · typical adult weight 0.53–1.60 kg

3 cited drugs treat Endoparasites in peregrine falcons: Fenbendazole, Praziquantel, Pyrantel Pamoate.

Gastrointestinal helminth and protozoal infections. Macrocyclic lactones, benzimidazoles, and pyrantel cover the bulk of nematode treatment; protozoal indications require dedicated drugs (metronidazole, sulfadimethoxine).

The overview above describes Endoparasites across species; the citations below are the ExoticRx dose rules scoped to peregrine falcons — a reference list, not new species-specific clinical guidance.

Fenbendazole(Panacur)

Antiparasitic

Route	Dose	Frequency	Duration	Indication	Evidence	Source
PO	25 mg/kg	once	—	Ascarids, some microfilariae, capillariasis, other	Moderate	Samour, Avian Medicine, 3rd Ed. (raptor formulary appendix), p.666. Row as printed binds this dose to raptors on its own line: "Fenbendazole Panacur 2.5% or 10% Raptors PO 100 mg/kg once Ascarids, some microfilariae, capillariasis, other". Located by line-level extraction and then read on the page; the species binding is the row's own species column, not text proximity. \| REDUCED 100 -> 25 mg/kg ON 2026-08-20 after independent cross-book review: raptor text p.325 "Fenbendazole 25 mg/kg either once or SID for 3-5 days ... Possible toxicity in vultures?"; BSAVA raptor p.65 "Fenbendazole is considered to be toxic in vultures"; Plumb's p.534 "NOTE: Fenbendazole may cause severe toxicity in some birds". Primary toxicity reports: Weber MA et al., J Am Vet Med Assoc 2002;221:417-419 (bone marrow hypoplasia, five painted storks); Gozalo AS et al., J Am Assoc Lab Anim Sci 2006;45:63-66 (mortality in pigeons); Bonar CJ et al., J Avian Med Surg 2003;17:16 (two vulture species); Howard LL et al., J Avian Med Surg 2002;16:203-210. \| PRIMARY TOXICITY REPORTS VERIFIED IN PUBMED 2026-08-20, retrieved independently of the handbook reference list that named them: Gozalo AS, Schwiebert RS, Lawson GW. "Mortality associated with fenbendazole administration in pigeons (Columba livia)." J Am Assoc Lab Anim Sci 2006;45(6):63-66. PMID 17089995 — https://pubmed.ncbi.nlm.nih.gov/17089995/ . Weber MA, Terrell SP, Neiffer DL, Miller MA, Mangold BJ. "Bone marrow hypoplasia and intestinal crypt cell necrosis associated with fenbendazole […]" J Am Vet Med Assoc 2002;221(3):417-419. PMID 12164542 — https://pubmed.ncbi.nlm.nih.gov/12164542/ . Both titles state the harm directly; neither paper was read in full, so this establishes that the reports exist and what they report, not their dose-response detail. \| RAPTOR-SPECIFIC LITERATURE RETRIEVED 2026-08-20: Al-Timimi F, Nolosco P, Al-Timimi B. "Incidence and treatment of serratospiculosis in falcons from Saudi Arabia." Vet Rec 2009;165(14):408-409. doi:10.1136/vr.165.14.408. PMID 19801594 — https://pubmed.ncbi.nlm.nih.gov/19801594/ (30 mg/kg PO 5-8 days effective, no side effects). Doss GA, Mans C, Johnson L, Pinkerton ME, Hardie RJ, Sladky KK. "Diagnosis and management of inflammatory bowel disease in a harpy eagle (Harpia harpyja) with suspected fenbendazole toxicosis." J Am Vet Med Assoc 2018;252(3):336-342. PMID 29346050 — https://pubmed.ncbi.nlm.nih.gov/29346050/ . Both abstracts read in full.
PO	30 mg/kg	q24h	Course of 5 to 8 days as published	Serratospiculosis (air-sac nematode)	Moderate	PRIMARY LITERATURE, species named in the study: Al-Timimi F, Nolosco P, Al-Timimi B. "Incidence and treatment of serratospiculosis in falcons from Saudi Arabia." Vet Rec 2009;165(14):408-409. doi:10.1136/vr.165.14.408. PMID 19801594 — https://pubmed.ncbi.nlm.nih.gov/19801594/ . Abstract retrieved and read 2026-08-20; dose, route, duration, efficacy endpoint and the safety statement are all stated in it. Full text not read.

Full Fenbendazole dosing in Peregrine Falcons →Calculate for this peregrine falcon →

Praziquantel(Droncit)

Antiparasitic

Route	Dose	Frequency	Indication	Evidence	Source
SC	5–10 mg/kg	once	Active against cestodes and trematodes	Moderate	Samour, Avian Medicine, 3rd Ed. (raptor formulary appendix), p.668. Row as printed binds this dose to raptors on its own line: "Praziquantel Droncit 50-mg tablets Raptors SC or PO 5-10 mg/kg once Active against cestodes and trematodes". Located by line-level extraction and then read on the page; the species binding is the row's own species column, not text proximity.

Full Praziquantel dosing in Peregrine Falcons →Calculate for this peregrine falcon →

Pyrantel Pamoate(Strongid-T, Nemex)

Antiparasitic

Route	Dose	Frequency	Indication	Evidence	Source
PO	20 mg/kg	once	Control of nematodes	Moderate	Samour, Avian Medicine, 3rd Ed. (raptor formulary appendix), p.668. Row as printed binds this dose to raptors on its own line: "Pyrantel Strongid (Pfizer); Nemex Raptors PO 20 mg/kg once Control of nematodes". Located by line-level extraction and then read on the page; the species binding is the row's own species column, not text proximity.

Full Pyrantel Pamoate dosing in Peregrine Falcons →Calculate for this peregrine falcon →

All drugs cited for Endoparasites →All drugs for Peregrine Falcons →

Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice. Verify against current literature before clinical use.