Why calcium matters so much
Stable bones, strong feathers, firm eggshells: calcium sits behind more than you might think. Black soldier fly larvae deliver it entirely naturally — as a protein-rich supplement for wild birds, chickens, hedgehogs and reptiles.
Why calcium matters so much for your animal
When calcium is lacking, it often only shows up late — in brittle feathers, soft eggshells or slower growth in young animals. During growth and moulting phases in particular, the requirement rises noticeably.
Eggshell formation
Without enough calcium, eggshells become thin and brittle — a frequent issue for chicken keepers, especially during the laying season.
Bone development
Young hedgehogs, young birds and growing reptiles need calcium for a stable bone structure and healthy growth.
Feather formation
During the moult, birds' calcium and protein requirements rise sharply — for strong new plumage.
BSFL compared with a pure mineral supplement
Classic oyster shell or grit delivers calcium — but nothing more. Black soldier fly larvae (BSFL) deliver calcium as part of a complete, natural feed.
| Criterion | EntoZoo BSFL | Pure oyster shell / grit |
|---|---|---|
| Nutrient profile | Calcium + approx. 42% crude protein + healthy fats | Calcium carbonate only |
| Origin & processing | Insect farming, gently dried, free from additives | Mineral extraction, industrially ground |
| Added benefit | Encourages natural pecking and foraging behaviour | Purely a supplement, no enrichment effect |
| Use | Supplementary feed and enrichment in one | Only as a source of minerals |
| Acceptance by animals | High acceptance thanks to natural smell & taste | Sometimes picked out and left |
Nutritional values are based on our own in-house analyses of our BSFL batch, as at 2026. BSFL does not replace a complete feed; it supplements daily feeding.
Choose your quantity
Three sizes — from the trial pack to a reserve that lasts several months. Ready to ship, delivery within 1–3 working days inside Germany.
1 kg
Starter · approx. 4 weeks for 6 chickens
€11.99
€11.99 per kg
- Ideal for trying out
- Resealable
- Shipped from Bremen
5 kg
Stock-up pack · approx. 5 months for 6 chickens
€54.99
€10.99 per kg · save 8%
- Best value for money
- Saves against the 1 kg bag
- Long shelf life
10 kg
Keeper's pack · approx. 10 months for 6 chickens
€99.99
€9.99 per kg · save 17%
- Maximum saving
- For larger flocks
- Optimised for shipping costs
What our larvae deliver
Black soldier fly larvae (Hermetia illucens) are among the most calcium-rich insects there are — and at the same time they provide high-quality protein and healthy fats.
Calcium content
Crude protein share
Shelf life unopened
Delivery time in Germany
Nutritional values at a glance
High-quality amino acids, healthy fats (omega-3 & omega-6) and above all: plenty of calcium for stable eggshells and strong bones.
| Crude protein | approx. 42% |
| Crude fat | approx. 28% |
| Crude fibre | approx. 7% |
| Crude ash | approx. 9% |
| Calcium | approx. 5% |
| Phosphorus | approx. 0.9% |
What keepers use our larvae for
Three effects that come back to us most often in practice — not advertising promises but typical observations with regular feeding.
Better egg quality
A higher calcium share supports stable eggshells in chickens. Carotenoids from the larval fat also intensify the colour of the yolk.
Stable growth
With enough calcium, young hedgehogs and young wild birds build stable bone structures faster — important before winter.
Strong plumage
During the moult, the combination of calcium and protein makes for more resilient, glossier plumage.
Frequently asked questions
The key points about calcium and BSFL that customers ask us most often.
Why do animals need calcium at all?
How does BSFL differ from oyster shell or grit?
How much BSFL should I feed each day?
Is BSFL a complete feed?
How long do the larvae keep?
How quickly is it delivered?
Strong bones, firm shells — entirely natural.
Try EntoZoo black soldier fly larvae with the 1 kg pack. If your animals do not take to them, or you are not convinced, get in touch — we will find a solution.
Order 1 kg now — €11.99
