Bumble bees are known to be amongst the most efficient natural pollinators and their increased scarcity in the ecosystem has led us to study their habitat and ethological preferences, so that future efforts can be designed for their restoration under the natural habitat. The present investigation explores the natural nest architecture, structural features of nest habitat, location of the nest, environmental parameters, population dynamics, emergence of drones, gynes, and variation in the sex ratio of Bombus haemorrhodalis. A total of ten natural nests were excavated at different altitudes ranging from 473.05 to 1258.52 m from different sites in two locations Nauni and Gandhal. The species inhabited the underground abandoned rodent’s cavities as nests at a depth of 15 cm to 140 cm with 1–2 external hidden entrances or below ground covered with involucrum made of small dried grass, leaves, pine needles, paper infused on/with wax, etc. The shape of the nest varied from circular to oval with an average size of about 3.88 cubic decimeters. The colony strength of all excavated nests ranged between 15 and 113 individuals, with average internal ambient temperature and relative humidity of the nest cavity varying from 20.9–29.7 °C and 24.6–79.3 percent, respectively. The honey storage (length x width; 16.02 × 15.74 mm), queen (15.02 × 14.60 mm), worker (13.25 × 12.58 mm) and drone cells (11.13 mm × 10.45 mm) varied in dimensions and were constructed by the workers with colony development. As a potential natural strategy to ensure survival, the gynes emerged earlier and higher in number than drones in late summer to early autumn and this progeny survived until the end of autumn. The current study exploring the natural environment of B. haemorrhoidalis helps understand and correlate the natural nest characteristics with laboratory-reared colonies for year-round rearing.

熊蜂被认为是最有效的自然授粉者之一，它们在生态系统中的日益稀缺促使我们研究它们的栖息地和行为学偏好，以便为它们在自然栖息地下的恢复设计未来的努力。本次调查探讨了血红熊的自然巢结构、巢栖息地的结构特征、巢的位置、环境参数、种群动态、雄蜂、雌雄的出现以及雌雄比例的变化。在 Nauni 和 Gandhal 两个地点的不同地点，在海拔 473.05 至 1258.52 m 的不同地点总共挖掘了 10 个天然巢穴。该物种栖息在地下废弃啮齿动物的洞穴中，巢穴深度为 15 厘米至 140 厘米，有 1-2 个外部隐藏入口，或在地下覆盖着由小干草、树叶、松针、浸蜡/蜡纸制成的包壳，巢的形状从圆形到椭圆形不等，平均大小约为3.88立方分米。所有挖掘出的巢穴的群体强度在 15 至 113 只之间，巢腔的平均内部环境温度和相对湿度分别为 20.9-29.7 °C 和 24.6-79.3%。蜜库（长x宽；16.02×15.74毫米）、蜂王（15.02×14.60毫米）、工蜂（13.25×12.58毫米）和雄蜂房（11.13毫米×10.45毫米）的尺寸各不相同，由工蜂和蜂群建造发展。作为确保生存的潜在自然策略，雌蜂在夏末至初秋出现的时间比雄蜂更早，数量也更多，并且这些后代一直存活到秋​​末。目前探索痔疮杆菌自然环境的研究有助于了解天然巢穴特征并将其与实验室饲养的全年饲养菌落联系起来。