Blue Tongue Skink Gestation Calculator
This blue tongue skink gestation calculator finds the expected birth date instantly. Select your species and enter the ovulation date to calculate the due date and view key milestones — no egg incubation needed, since skinks are live-bearers.
Quick Answer
Blue tongue skink gestation averages 100 days (100–105 days depending on species). Skinks are live-bearers, giving birth to 5–25 fully-formed neonates rather than laying eggs. Select your species above for an exact due date.
Blue Tongue Skink Gestation Calculator
Free tool — no signup required
Live-Bearer vs. Egg-Layer
Blue tongue skinks are viviparous live-bearers, meaning the female retains developing young internally, nourished via a placenta-like structure, and gives birth to fully-formed live neonates rather than laying eggs. This is unlike most other lizards, which are oviparous (egg-laying) — so there's no incubation period to manage, only a gestation countdown to the live birth date.
Gestation by Species
| Species | Avg. Gestation |
|---|---|
| Northern BTS | 100 days |
| Indonesian BTS | 100 days |
| Merauke BTS | 105 days |
| Halmahera BTS | 100 days |
Brumation for Breeding
Many breeders brumate adult blue tongue skinks for 6–8 weeks in cooler months before the breeding season. This cooling-and-warming cycle is believed to help trigger reproductive readiness, closely mimicking the seasonal cues these skinks experience in their native Australian and Indonesian habitats.
Neonate Care
A litter typically contains 5 to 25 neonates. House them individually to prevent food competition and tail-biting, with a basking spot around 95–100°F and a cool side around 75–80°F. Offer a mix of finely chopped vegetables, fruit, and appropriately sized protein (like small crickets) dusted with calcium, starting within a few days of birth.
How Blue Tongue Skinks Compare to Other Reptiles
| Species | Avg. Days | Reproduction |
|---|---|---|
| Boa Constrictor | 110 days | Live-bearer |
| Blue Tongue Skink | 100 days | Live-bearer |
| Bearded Dragon | 65 days | Egg-layer |
| Monitor Lizard | 165 days | Egg-layer |
See our boa constrictor gestation calculator.
How We Calculate Blue Tongue Skink Gestation
The calculator uses the formula: Birth Date = Ovulation Date + selected species' average gestation days, drawn from published herpetoculture references.
Frequently Asked Questions
Sources & References
- Merck Veterinary Manual — Reptile reproduction
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All Gestation Periods
Complete comparison chart
GestationCalc Editorial Team
Our editorial team includes animal husbandry specialists, veterinary consultants, and agricultural extension educators. Content is reviewed against peer-reviewed research and guidance from USDA, Penn State Extension, and the Merck Veterinary Manual.
Last reviewed: September 1, 2026