Gray-banded Kingsnake — Fact Sheet
Lampropeltis alterna · Gray-banded Kingsnake · Graugebänderte Königsnatter
📋 At a glance
| Adult size | 90-130 cm |
| Lifespan | 18-25 years |
| Subspecies | None accepted; “Blair’s” and “alterna” are pattern phases |
| Origin | Trans-Pecos Texas and northern Mexico |
| Activity | Nocturnal; terrestrial and crevice-dwelling |
| Difficulty | Intermediate |
| Legal | Not CITES/EU listed; local native-wildlife rules apply |
🏠 Enclosure
- Indoor, locked enclosure for one snake; minimum 120 × 60 × 60 cm.
- Seal narrow gaps; kingsnakes may eat other snakes and must not cohabit.
- Substrate: 8-12 cm compacted soil/sand with excavator clay.
- Avoid pure loose sand, calcium sand, sharp stone and unsecured heavy slabs.
🪨 Enclosure furniture
- Snug warm and cool hides plus a ventilated humid hide.
- Flat stones supported directly from the enclosure base to make safe crevices.
- Cork, low shelves, artificial plants and a small heavy water bowl.
- Anchor every rock so digging cannot cause a collapse.
💡 Lighting
- Low-level linear UVB is recommended over part of the warm zone.
- Provide shade and crevices at all heights.
- Replace lamps by measured output/manufacturer schedule.
- Photoperiod: 10 hours in winter, up to 14 in summer.
- No night lamp.
🌡️ Temperature
Basking spot: 29-31 °C
Warm zone: 23-27 °C
Cool zone: 20-24 °C
Night: 18-22 °C
Desert origin does not justify uniform heat; cool crevices are essential.
Thermostat heaters and measure the surface and both air zones.
Avoid heat rocks and unguarded bulbs.
💧 Humidity & water
- General humidity: 35-55%; ventilated humid hide 55-70%.
- Let the main substrate dry after light watering.
- Small heavy bowl with fresh water.
- Avoid both bone-dry air and chronically damp bedding.
🐁 Diet
Feed freely:
- Frozen-thawed mice; juveniles every 5-7 days, adults every 10-14 days.
In moderation:
- Scented or lizard-shaped captive prey when establishing difficult hatchlings.
Avoid:
- Wild lizards, live rodents, force-feeding without veterinary direction and oversized meals.
Supplements:
- Whole prey needs no routine powder.
💤 Brumation
- Mainly a breeding tool: about 10-14 °C for 8-12 weeks.
- Use only healthy, established adults after body-condition and digestive checks.
- Never brumate juveniles, new arrivals or compromised animals.
- Monitor weight and hydration and involve an experienced veterinarian if condition changes.
🩺 Health — warning signs
- Persistent hiding with no feeding → stress, insufficient cover or wrong temperature.
- Regurgitation → excessive heat, oversized prey, disturbance or disease.
- Retained shed → dehydration or missing humid refuge.
- Mouth rubbing → insecure crevice or escape behaviour.
- Obesity → adult fed too often.
- Burn or crushing injury → unguarded heater or unstable stonework.
- Egg binding → missing nest, poor condition or reproductive complication.
Seek a reptile-experienced veterinarian for weight loss, repeated regurgitation or reproductive signs.