Sizes and prices: 25mm and 30mm Bumpa Bits, sold in pack of 8 bits. 25mm bits fit a bantam or a larger bird with a short beak. 30mm suits a hyrbrid or large fowl bird.
 
Measure the distance between the nostril and tip of the beak to get the right size. 
 
All bumpa bits will benefit from warming in a cup of hot water prior to fitting, as they are more prone to snapping when cool - take care when fitting. I would suggest ordering more 25mm bits than you think you will need as they can snap easily because they are so small.
 
Postage:  £1.80 (for up to 2 packs, unless included with other products) select at checkout
 
Product description: Bumpa Bits are a valuable tool in preventing serious injury in the case of bullying or feather pulling. These are for hybrid-sized birds.
 
They are applied with a pair of circlip pliers (sold separately) and fit between the upper and lower beak to protect the sharp end of the beak and prevent the bully from grabbing feathers or flesh. The bird will still be able to eat and drink; we’d recommend deep feeders and drinkers for the period while the bit is fitted. 
 
Chickens learn, and unlearn, habits fairly easily, so you should find that it will only need to wear the bit for 3-4 weeks. 
Please watch the video above for fitting instructions.
 
Sold in packs of 8 bits. The pliers are sold separately
 
Clare’s comment: I can’t emphasise enough how important it is to act quickly in cases of bullying; the situation can quickly escalate into serious injury or worse. Bumpa Bits enable you to work on any possible environmental causes, while the bullying bird is prevented from causing any serious injury.