Breeding programmes and researchers assess honeybee colonies using standardised behavioural protocols so that different colonies, apiaries and even countries can compare results on the same scale. This simulation shows two of the most common tests side by side on a single comb frame: a docility / running test, done by disturbing the comb and watching how bees respond, and the freeze-kill hygienic behaviour assay, which measures how quickly a colony detects and removes dead brood.
Because "hygienic" and "gentle" are independent traits, national bee-improvement programmes (e.g. BeeBreed and the Bee Improvement and Bee Breeders' Association's BS 1-6 card system) record temperament, running and hygienic scores as separate fields on the same colony record card, so a queen can be selected for the trait combination a breeder actually needs.
A single comb frame shows two standardised behavioural-trait tests at once: a docility/running test on the left where disturbance drives live BS-style scores, and a freeze-kill hygienic behaviour assay on the right where a colony's cleaning speed is scored against the 24h/48h benchmark.
How docility, running and hygienic behaviour are three distinct, separately scored traits — a colony can be calm but slow to clean brood, or defensive yet highly hygienic, which is exactly why breeders record all three.
Pick a colony temperament line, raise or lower the disturbance to see docility and running scores respond, then set a hygienic removal rate and watch the freeze-kill patch clear toward the 95%-at-48h benchmark.
The freeze-kill assay is usually done with a section of comb dipped in liquid nitrogen or frozen overnight, then reinserted into the hive — colonies that clear ≥95% of the dead brood within 48 hours are classed as hygienic.