Advanced Queen Marking and Wing Clipping: Colour Codes and Safe Technique
A practical guide to the international queen marking colour code and safe wing-clipping technique, covering tools, timing and how to avoid injuring the queen.
Why mark a queen at all
Finding an unmarked queen in a box of 40,000 bees is one of the most time-consuming tasks in beekeeping, and every minute spent searching is a minute the colony is disturbed and the frames are exposed to chilling or robbing. A dot of coloured paint on the thorax turns a five-minute hunt into a five-second glance, which matters enormously during swarm control, when confirming supersedure, or when running multiple colonies with queens of different ages that need to be told apart at a glance during a busy inspection round.
Marking also gives an instant visual record of a queen's age without consulting notes, because the international colour code assigns a specific colour to each year in a five-year repeating cycle. A beekeeper who knows the code can look at any marked queen in any apiary and immediately know roughly how old she is, which is invaluable when deciding whether it's time to requeen a colony that is starting to show a patchy brood pattern.
The international colour code
The standard cycle used across Europe, including by UK county associations, assigns white to years ending in 1 or 6, yellow to years ending in 2 or 7, red to years ending in 3 or 8, green to years ending in 4 or 9, and blue to years ending in 0 or 5. A simple mnemonic that beekeepers pass down is 'Will You Raise Good Bees', giving the sequence white-yellow-red-green-blue in order. Sticking rigidly to the code, even if you only keep a couple of hives, means any queen you buy in or any advice you get from another beekeeper about 'the blue queen' is immediately meaningful.
In practice, most beekeepers use either a proprietary queen marking pen with quick-drying, non-toxic paint, or dab a tiny amount of enamel model paint with a fine wire or matchstick tip. The paint should form a small, neat, dry dot roughly a millimetre across on the top-centre of the thorax, avoiding both the head, where it can affect vision or mouthpart function, and the edges of the thorax, where excess paint risks gluing a wing down.
Restraining and marking safely
The queen should never be marked by pinching her thorax directly with fingers, since even light pressure applied at the wrong angle can damage her internal organs or legs. A purpose-made queen marking cage or tube, which gently traps her against soft foam or mesh while leaving the thorax exposed through a small window, is by far the safest option and lets a beginner mark a queen confidently on the first attempt. Some experienced breeders use a controlled one-handed hold, cupping the queen loosely by the wings between thumb and forefinger, but this takes considerable practice and carries more risk for anyone still learning.
Whichever method is used, the queen should be released back onto the comb, not dropped or thrown, and given a minute to walk normally before the frame is returned to the hive, so you can confirm she has not been injured. Marking is best carried out in good light with the colony calm, ideally on a warm, still day when there is a strong nectar flow and bees are less defensive, since a rushed marking attempt in poor conditions is when accidents happen.
Wing clipping as a swarm safety measure
Wing clipping removes part of one forewing so that a queen cannot fly with a swarm, meaning that if the colony does attempt to swarm despite prevention measures, the queen falls to the ground near the hive rather than departing with the cluster, buying the beekeeper time to find her, cage her, and either return her to the hive or use her to head a new colony. It is a backstop, not a substitute for proper swarm management such as adequate supering and timely queen cell checks, and a clipped queen can still successfully lead an after-swarm on foot if it is not noticed quickly.
Only one wing should ever be clipped, never both, because clipping both wings can affect the queen's balance and her ability to walk normally and re-enter the hive. No more than roughly a third of the wing's length should be removed, using small, sharp, clean scissors, and the queen should be checked afterwards for any sign of bleeding or damage to the wing base before being released. Many UK beekeepers clip only in her first season and choose not to reclip in later years, viewing the marking colour code alone as sufficient once they are confident in their swarm control routine.
Frequently Asked Questions
Does wing clipping stop a colony from swarming?
No. Clipping only prevents the marked queen from flying off with the swarm; the colony can still raise a virgin queen and swarm with her later (an afterswarm), so clipping must be combined with, not used instead of, standard swarm prevention such as adequate space and queen cell checks.
What colour should I use to mark a queen this year?
Under the standard international five-year cycle, years ending in 6 use white, years ending in 7 use yellow, years ending in 8 use red, years ending in 9 use green, and years ending in 0 use blue, repeating every five years.
Can I mark a queen without a marking cage?
It is possible to mark a queen held gently by the wings between finger and thumb, but a purpose-made queen marking tube or cage is much safer for anyone without significant experience, since it prevents accidental pressure on the abdomen or legs.
Will bees reject a queen because she has been marked or clipped?
Properly applied paint and a clean wing clip do not cause colonies to reject their queen; rejection risk comes from rough handling, prolonged confinement, or leaving her exposed to chilling during the process, not from the marking or clipping itself.