Elevate Your Flock's Health with GrubTerra Dried Black Soldier Fly Larvae!

Last updated: April 20th, 2026

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Providing the right nutrition for your ducks goes beyond their main feed. High-quality protein sources and natural supplements can play an important role in supporting feather health, egg production, and overall vitality. One option that has become increasingly popular among duck keepers is dried black soldier fly larvae (BSFL).

BSFL are a nutrient-dense treat, naturally rich in protein, healthy fats, and calcium. Unlike many traditional treats, they offer real nutritional value rather than just empty calories. This makes them especially useful during demanding periods such as egg laying, molting, or recovery.

In our own flock, we like to incorporate BSFL as part of a balanced feeding routine. They are easy to offer, encourage natural foraging behavior, and are always a favorite at treat time.

In this post, I will share why black soldier fly larvae can be a valuable addition to your ducks’ diet, what to look for in a quality product, and how to feed them safely as part of a well-rounded nutrition plan.

Part of the Feeding & Nutrition Hub, Data-backed analysis of duck dietary requirements and foraging behavior.

Why We Use Black Soldier Fly Larvae (And What to Look For)

Not all treats are created equal. When I add something to my ducks’ diet, I look for nutritional value, sourcing, and real benefits, not just something they get excited about.

Sustainably Raised

One thing I appreciate about quality black soldier fly larvae products like GrubTerra Dried Black Soldier Fly Larvae is the focus on sustainability. These larvae are typically raised on recycled food waste that would otherwise end up in landfills. In fact, for every pound of larvae produced, a significant amount of organic waste is diverted. It is a simple way to support a more sustainable food system while feeding your flock.

Nutrient-Dense and Balanced

Black soldier fly larvae are naturally rich in protein, healthy fats, and minerals, especially calcium. When raised on a diverse diet of vegetables, fruits, and carbohydrates, they provide a more balanced nutritional profile compared to many other treats.

Calcium for Strong Eggshells

One of the biggest advantages over traditional mealworms is the calcium content. BSFL contain dramatically higher calcium levels and a more favorable calcium-to-phosphorus ratio, which is critical for strong eggshell formation and overall bone health in laying ducks.

Feather and Energy Support

During molting or colder months, ducks benefit from additional protein and energy. BSFL can help support feather regrowth, energy levels, and overall condition, making them a useful seasonal supplement.

Clean and Simple Ingredients

High-quality BSFL products should be 100% natural, without preservatives or additives. This makes them suitable not only for ducks but also for other poultry and even wild birds.

A Smarter Treat Option

Compared to dried mealworms, GrubTerra Dried Black Soldier Fly Larvae are simply a more nutritionally complete option. They provide meaningful benefits rather than just acting as a snack.

In our flock, they are one of those treats that check all the boxes:
✔ Ducks love them
✔ They support health and egg production
✔ They fit into a balanced feeding approach