Fascinating facts about the Common Carder Bumble Bee
Queens tower over their crew, measuring 28 to 32 mm from wing tip to wing tip, while workers and drones are a tighter 24 to 27 mm across. A queen's body stretches 15-18 mm, dwarfing the 9-15 mm workers and the 12-14 mm males. Even the head shows the hierarchy: the queen's snout is 13-15 mm long, workers sport a 12-13 mm snout and drones only 10-11 mm.
In midsummer the colony swells to a bustling city of 60-150 bees inside a nest up to 20 cm wide. By August the nest reaches its maximum diameter of 15-20 cm (5.9-7.9 in) and houses the peak population. After this boom the numbers tumble as the queen and most workers die by September, leaving only a few late-hatching females to overwinter. This rapid rise and fall shows how the species packs a large workforce into a tiny space for a short, intense reproductive window.
The season kicks off when queens emerge in early April and hunt for nesting spots until mid-May, while workers appear a bit later, from late April into mid-October. Young queens and drones linger from mid-August through late October, ready to mate before the cold. This staggered calendar spreads the colony's labor: early queens start the nest, workers take over foraging, and late-season reproductives ensure gene flow before winter.
When scouting for a home, a queen hovers just above vegetation, probing holes in the ground, dead wood or grass, then fashions a tiny sphere of moss and grass bonded with wax. Inside she builds a 5 mm brown wax bowl packed with pollen, lays 5-15 eggs, caps the cell, and adds a 20-mm nectar cup for rainy days. Nests may sit above or below ground, often in abandoned mouse or bird nests, barns or sheds. This clever use of readily available materials creates a weather-proof nursery that lets the colony survive sudden storms.
The common carder bee doesn't stick to one flower, it is polylectic, sipping nectar from nettles, motherwort, Himalayan balsam, cabbage thistle, knapweed, vetches, clovers, monkshood and even fruit trees.
Sources
Every fact above was checked against these pages, and kept only where one of them states it.
As the sun rises over the dew-kissed meadows, the Common Carder Bumble Bee stirs to life, its furry body a vibrant tapestry of brown and yellow hues that seem to glow with an inner warmth. With a gentle hum, it takes to the air, its wings beating in a hypnotic rhythm as it navigates the intricate network of wildflowers with a busy, purposeful air, collecting nectar and pollen with an industry that is at once captivating and reassuring. In its quiet, unassuming way, this humble bee is a masterpiece of evolution, a testament to the beauty and resilience of life in the natural world.
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