Acute Hypocalcemia in Birds 2025 🐦 | Vet Guide by Dr Duncan Houston BVSc

Acute hypocalcemia is a sudden, severe drop in blood calcium that can cause tremors, weakness, seizures, tetany, and even death in birds. African grey parrots on seed-only diets are particularly prone. Immediate calcium therapy and UVA support are lifesaving.

1. 🧠 What Is Acute Hypocalcemia?

Occurs when blood calcium falls below safe levels, impairing neuromuscular and cardiac function. Birds show rapid-onset signs; hunting for underlying causes is crucial :contentReference[oaicite:3]{index=3}.

2. 🚩 Common Signs & Symptoms

• 🔹 Tremors, muscle twitching or rigidity (tetany)
• 🔹 Weakness or unsteady gait, falling off perches (ataxia) :contentReference[oaicite:4]{index=4}
• 🔹 Seizures or spasms, particularly in African greys :contentReference[oaicite:5]{index=5}
• 🔹 Sudden collapse or breathing difficulty (stridor)
• 🔹 Heart rhythm changes, arrhythmias (prolonged QT) :contentReference[oaicite:6]{index=6}

3. 🧬 Why Birds Develop Acute Hypocalcemia

• Dietary deficiencies: low calcium, low vitamin D, seed-based diets :contentReference[oaicite:7]{index=7}
• Insufficient UV‑B exposure: needed for vitamin D synthesis and calcium absorption :contentReference[oaicite:8]{index=8}
• Egg production: sudden calcium loss during laying (“egg binding”) :contentReference[oaicite:9]{index=9}
• Parathyroid dysfunction: hormonal imbalance in some species :contentReference[oaicite:10]{index=10}

4. 🔬 Acute Diagnosis & Emergency Management

1. 🐦 Clinical suspicion: tremors, seizures, weakness.
2. 📊 Blood tests: measure total & ionized calcium, consider magnesium and phosphorus.
3. ❤️ ECG: watch for arrhythmias, prolonged QT intervals (indicative of low Ca) :contentReference[oaicite:11]{index=11}.
4. 🏥 Emergency treatment:
   • Injectable calcium gluconate 100 mg/kg IM or slow IV over 5–10 minutes :contentReference[oaicite:12]{index=12}.
   • For severe cases, continuous IV infusion may be necessary :contentReference[oaicite:13]{index=13}.
   • Correct magnesium if low—essential for calcium regulation :contentReference[oaicite:14]{index=14}.
5. 🔍 Further evaluation: assess diet, UV-B access, egg-laying status, and possibly PTH function.

5. 🛡️ Supportive & Follow-Up Care

• Switch to calcium-rich diet. Include dark leafy greens, eggshell powder :contentReference[oaicite:15]{index=15}.
• Provide 15–20 min daily direct sunlight or UV‑B lighting :contentReference[oaicite:16]{index=16}.
• Offer oral calcium supplements & active vitamin D (calcitriol) daily under vet guidance :contentReference[oaicite:17]{index=17}.
• Monitor weight, gait, behavior, droppings.
• Repeat ionized calcium levels every few days until stable.

6. 🩺 Preventive Measures

• Use balanced pellet diets supplemented with calcium and vitamins.
• Ensure consistent UV-B exposure (bulbs or natural).
• Monitor egg-laying hens—consider calcium boost during laying season :contentReference[oaicite:18]{index=18}.
• Avoid exclusive seed-diets prone to deficiency.
• Consider periodic blood calcium checks in high-risk species (African greys, hens).

7. ✅ Prognosis & Owner Guidance

• Rapid calcium treatment often results in dramatic recovery.
• Underlying issues (like diet/UV deficiency or egg-laying) must be corrected to prevent relapse.
• Gentle reconditioning may be necessary for birds post-seizure or weakness.

8. 🧡 Final Thoughts

Acute hypocalcemia is a true emergency that requires swift veterinary intervention. With prompt calcium replacement, vitamin D support, and husbandry adjustments, many affected birds recover fully. Lifelong monitoring and dietary balance are key to preventing recurrence—especially important in susceptible parrots and laying hens.

— Dr Duncan Houston BVSc

👉 For emergency protocols, calcium dosing charts, or UV-lighting guides, visit AskAVet.com or download the Ask A Vet app. Our avian team is here 24/7 for your bird’s health. 📱✨