calci worms
Worth a lookShows searches that convert (21.4% search→purchase), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Conversion
Incredible21.4%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Growth
Great+78.5%90-day search growth — must beat 0% to launch
Avg price
Great£15.68avg listing price — sweet spot $15–$100
Price range
Great£4.03–£48.58cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good612.64avg incumbent reviews — the moat a new listing must climb
Competition
Good51%top-5 click share — leaders hold, buyers still browse
Market size
Okay£210K£210K/yr · 63K searches
Brand share
Okay85%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United Kingdom niche tracking, calci worms is a £210K/yr Amazon United Kingdom market (63K searches/yr). The top 5 brands hold 85% of demand. Demand peaks in Apr–May–Jun. Verdict: Worth a look — 64/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
calci worms market data
- Units sold / yr
- 10K–13K
- avg 250–500/product
- Revenue / yr
- £157K–£196K
- units × avg price
- Conversion rate
- 21.4%
- Avg BSR
- #91
- Page quality
- 0%
- Prime
- 36%
- Sponsored
- 91%
- Out of stock
- 3.3%
- Avg brand age
- 57 months
- Avg seller age
- 196 days
Competition & brand share
The top 5 products take 51% of clicks — established leaders, but buyers still shop beyond them.Brands
10 rising
Sellers
15
Top-5 brand share
85%
Top 20: 100%
Top-5 click share
51%
Top 20: 97%
Open market
9%
- MALTBYS' STORES 1904 LTD29%
- Hungry Wings27%
- Cutting It Vine13%
- Superpet Ltd8%
- Walter Products Wildlife and Aquatics7%
- Cheap & Chirpy6%
- Open — no brand owns it (4 brands, 9%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +78.5% search growth over the last 90 days.Peak months: Apr, May, Jun · busiest ÷ quietest = 3.1×
Top calci worms search terms
- calci worms43K/yr
- calciworms6K/yr
- calciworms for wild birds6K/yr
- calci worms 5kg4K/yr
- calci worms 10kg4K/yr
Top calci worms products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Premium Wild Bird Food 5L Refill (5L Bag Calci Worms)
Hungry Wings£7.194.6★1,414 rev
10 Litre Refill Bag Dried Calciworms Premium Wild Bird & Hedgehog Food (Weight 1.5kg/approx. 10L)
MALTBYS' STORES 1904 LTD£9.324.6★296 rev
Cutting It Vine Premium Dried Calciworms for Wild Birds 10L (2 x 5L Bags) Natural Bird Food High In Calcium All Life Stages
Cutting It Vine£12.094.5★80 rev
Cheap & Chirpy Calciworms For Wild Birds - 5 Litre Refill Bag - Wild Bird Feed - Swan And Duck Food - Calci Worms for Birds (packaging may vary)
Cheap & Chirpy£5.574.6★7 rev
Dried Calciworms for garden birds Calci worms for wild birds (5L refill bag - 800g) Bird food
Cutting It Vine£8.004.5★598 rev
Newest
by launch dateCheap & Chirpy Calciworms For Wild Birds - 5 Litre Refill Bag - Wild Bird Feed - Swan And Duck Food - Calci Worms for Birds (packaging may vary)
Cheap & Chirpy£5.577 rev
Hungry Wings Wild Bird Food 2.5L Refill Bag (Calci Worms)
Hungry Wings£4.141,414 rev
Cutting It Vine Premium Dried Calciworms for Wild Birds 10L (2 x 5L Bags) Natural Bird Food High In Calcium All Life Stages
Cutting It Vine£12.0980 rev
Dried Calciworms 5L Bag Wild Bird Food (Approx weight 750g - 5 Litre) MCW
MALTBYS' STORES 1904 LTD£6.58145 rev
Dried Calciworms for garden birds Calci worms for wild birds (5L refill bag - 800g) Bird food
Cutting It Vine£8.00598 rev
Trending
90-day click momentumHungry Wings Wild Bird Food 2.5L Refill Bag (Calci Worms)
Hungry Wings£4.144.6★
Cheap & Chirpy Calciworms For Wild Birds - 5 Litre Refill Bag - Wild Bird Feed - Swan And Duck Food - Calci Worms for Birds (packaging may vary)
Cheap & Chirpy£5.574.6★
1L Tub Calci Worms Wild Bird Food - Premium Bird Feed High Calcium Protein Treat for Garden Wildlife
direct deals 123£5.134.4★
Walter Products Calci Worms 10L Tub - Bird Food for Wild Birds - Packaged in a Reusable Bucket
Walter Products Wildlife and Aquatics£14.204.6★
Dried Calciworms 15kg Premium Wild Bird & Hedgehog Food
MALTBYS' STORES 1904 LTD£48.584.6★
What buyers say about calci worms
What buyers praise and complain about, mined from review topics.What buyers love
“Good Value”
“Birds very happy”
“very quality, arrived quickly and in good condition”
“Does what it says”
“tasty treat”
“Good size”
“the birds love them come in their own little bucket easy to use”
“Everything is fresh”
“plump with no dust or very strong smell like some others I've bought”
“Really good value for a huge bag that lasts months - starlings, crows and robins love them”
What buyers complain about
“Poor Quality”
“The two bags are huge”
“They smell and are black and discoloured”
“Half the price I usually pay”
“Bag full of dust”
“Smelly and dark brown, Suspect theyd started to rot before throughly dried”
“Then it costs me £30 to get my car cleaned because of the do do”
“so much waste in them”
“Not the volume or weight advertised”
“dark almost black”
Common questions
- Is calci worms profitable to sell on Amazon United Kingdom?
- The niche generates £210K/yr across 22 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is +78.5%. Flapen's verdict: Worth a look (64/100).
- How competitive is the calci worms niche?
- 10 brands and 15 sellers compete. The top 5 products take 51% of clicks and top 5 brands hold 85% of demand.
- What do buyers complain about in calci worms?
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Smell. The return rate is 0.0%.
- When does demand for calci worms peak?
- Demand peaks in Apr–May–Jun; the busiest month runs 3.1× the quietest.
- What does it cost to enter the calci worms niche?
- Listings span £4.03–£48.58; the average listing price is £15.68 (sweet spot $15–$100). The average incumbent carries 613 reviews — the moat a new listing must climb.