• Order by 2pm for Next Day Delivery*

  • High Quality Ingredients

  • All Suet Products Made On Our Farm

Dried Calci Worms

    Dried Calci Worms

    BRAND: Dawn Green

    Give your garden birds the very best diet possible by including Dried Calci Worms! With up to 50 times the amount of calcium as Dried Mealworms, Calci Worms are a healthy supplement to your existing high-quality bird seed mix.

    Soak them in warm water for 30 minutes before you feed them to add in extra moisture and hydration for your garden birds.

    ProductPricePer Kg
    10kg (2 x 5kg)£58.95£5.90

    Price: £0.00

    In stock




    Unfortunately for our UK wild birds, natural sources of calcium are becoming harder and harder to find. With the heavy use of pesticides in agriculture and the reduction of wild land, birds are finding healthy calcium sources few and far between.


    But luckily for our garden visitors, Calci Worms are here to help!


    What are Calci Worms?

    Calci Worms are the larvae of the Black Soldier Fly (Hermetia illucens). They typically have up to 50 times the amount of calcium than other insects or worms and are suitable to feed to a wide variety of birds, insects, and mammals. They’re also particularly popular as a source of calcium and protein for fish!

    The high calcium content offers wild birds a variety of healthy benefits such as:


    • Good bone strength in growing and adult birds. Bone breakages are a leading cause of fatalities in wild birds so strong bones help to reduce this risk.
    • Birds with a healthy calcium intake are likely to lay more eggs. This is true for a wide variety of native birds but in particular woodpeckers, tits and wrens.
    • Helps in the development of strong eggshells. A sturdy eggshell can provide developing chicks protection from disease as well as healthy hatching and sturdy, rapid bone growth.



    How to Feed Dried Calci Worms

    Calci worms can be fed in the same way you would feed Dried Mealworms. They work well in specialised worm feeders or trays, and you can keep your ground feeding birds happy by simply throwing handfuls of Calci Worms on the ground.

    As with all types of bird food, Calci Worms are best fed as part of a balanced diet. We recommend mixing Calci Worms into a high-quality seed mix, like our Ready Peck 5-A-Day Seed Feeder Mix, so your garden birds are getting a fantastic variety of healthy oils, protein and calcium.

    Try soaking the Calci Worms in warm water for 30 minutes before you put them out to pack in extra moisture and hydration for your wild birds.


    The Science Behind Calci Worms for Wild Birds

    Calcium is an important ingredient for the development of wild birds. In fact, wild birds need more calcium in their diet than any other mineral. Not only is it required for bone and eggshell development, it’s also a vital aid in muscle contraction, nerve impulse transmission, and many other metabolic processes.

    According to research, calcium and vitamin D3 deficiencies in wild birds are often the result of poor dietary supplementation and can manifest as bone and joint deformities throughout generations of birds.  

    An excess of calcium or phosphorus in wild bird diets can cause problems for wild birds, however, calci worms have balanced levels of both nutrients, providing your garden birds with just the right amount of each.


    How do Calci Worms Compare to Dried Mealworms?

    Dried Mealworms are typically higher in protein; however, Calci Worms are much higher in fat and, of course, calcium. In order to keep your wild birds happy and healthy throughout the year you can either alternate between the two types of worms during different seasons, or mix the two together all year round.

    Calci Worms are ideal to feed in the weeks leading up to breeding and egg laying seasons. The added calcium can aid in producing healthy, thick egg shells to keep growing chicks secure. Many birds don’t store extra calcium so it’s important that Calci Worms are offered as close to this season as possible.

    During fledgling season and leading into the summer months, the high protein content in Dried Mealworms gives birds much needed extra energy whilst they moult and for growth.


    Can I Feed Calci Worms to Hedgehogs?

    The healthy balance of calcium and phosphorus in Calci Worms means that, unlike mealworms, they are perfectly safe for hedgehogs to eat. The high levels of calcium, fat and protein in Calci Worms make for a nutritious and tasty meal for our spiky friends. 


    Packaging: Our 1.5kg & 5kg options come in a fully recyclable plastic bag. Our 10kg option comes as 2 x 5kg bags in a recyclable box. Our cardboard boxes are also made from recycled materials and our gum tape and labels are all recyclable. 


    For some brilliant information on how wild birds in the UK find their calcium, click here.


    Free Delivery 

    Order by 2pm for next working day delivery.

    Free delivery on orders over £19.50 in our standard delivery areas *.

    12.55kg Premium Sunflower Hearts also have free delivery. 

    We operate a same day despatch with DPD Next Working Day Delivery for orders received before 2pm Monday to Friday.

    Friday orders after 2pm will be processed on Monday. 

    Please note: DPD cannot guarantee Next Day Delivery. DPD Next Day Delivery has a 99.8% success rate. 


    Standard Delivery 

    Orders under £19.50 (exluding Premium Sunflower Hearts) are £3.95 to standard delivery areas *.

    Orders outside of the standard delivery areas are calculated by postcode and a price will be displayed in the checkout once a postcode has been entered.


    Saturday Delivery

    DPD Saturday Deliveries (£5.95) will only be made on orders placed before 2pm on the previous Friday.

    DPD Saturday Deliveries placed after 2pm on Friday will be shipped on a DPD Next Working Day delivery.


    Safe place instructions must be left directly with DPD. We cannot guarantee safe place instructions will be seen by the courier unless left with DPD once you receive your delivery text or email. 

    Please allow 2 working days for delivery. If you have not received your order within 2 working days please contact us. 

    * For delivery information on: Scottish Highlands, Islands & Republic of Ireland please contact us.


    We do not deliver on Sundays.

    We do not deliver outside the UK.


    Be the first to review this product

    Write Your Own Review

    You're reviewing: Dried Calci Worms

    How do you rate this product? *

    Trusted Shops Reviews
    The quality of the products I buy is always really good.



    22nd January, 2020

    Next day delivery, recycled packaging and the birds love the seeds and fatballs.



    21st January, 2020

    Fabulous seed...service...price and delivery....i will be back ...brilliant ...many thanks from me and my garden birds ... Brought a bob (robin) feeder too...and seems great...i have a very happy robin too ....ive already recommended to my family to try you on price and service



    20th January, 2020

    Reliable and efficient service.



    20th January, 2020

    Good value products, delivered promptly and loved by my birds.



    20th January, 2020

    Will use Ivel Valley Bird Food again. Good value for money.



    20th January, 2020

    I especially like the fact that you get next day delivery and then DPD give you a one hour time slot on the day The food is great quality and the birds in my garden love it.



    20th January, 2020

    Grwat service



    19th January, 2020

    I found the bird food I ordered was extremely good the packages were packed well also and although the birds have only had there suet for a few days they are loving it.



    18th January, 2020




    18th January, 2020

    Sign up to receive news and offers from Ivel Valley and get 10% off your next order: