
If you’re new to bee spotting, March is a good month to begin If you’ve been waiting all winter to get back to bee spotting, now’s the month to resume on dry, warm, sunny days.
In March, the queens of two common bumblebee species are emerging from hibernation:
- The Early bumblebee (Bombus pratorum) queen is small for a bumblebee (13mm), with yellow and black stripes and a distinctive orangey bottom. By the end of the month her brood may have developed into adult, worker bees and will be out foraging instead of the queen. They are a smaller version of the queen. At just 9mm, they are the smallest bumblebee you will see. They get their name because the colony is the earliest to develop, with males flying by May
- Common carder bumblebee (Bombus pascuorum) queens start to make nests in March, and her colony can go on well into October. She is easily recognisable from her fluffy, gingery thorax and brown bottom. Queens are around 13mm. The slightly smaller workers look identical.
(Other common bumblebees flying now are the very large, stripy Buff-tailed bumblebee (Bombus terrestris), whose colonies have been active throughout the winter in many parts of the UK, and the tri-coloured Tree bumblebee (Bombus hypnorum) queen with a gingery thorax, black body and white bottom.)
Queen bumblebees are either looking for a place to nest (most nest underground in old rodent holes, which is why you may see them flying close to the ground, but Common carder bees prefer tussocks of long grass and mossy areas, and Tree bumblebee nest high in tree trunk or bird boxes), or they have just found a good location and laid some their eggs, and are out collecting nectar and pollen to take home to feed their developing colony of workers.
The males of six common species of solitary bees emerge:
- Hairy-footed flower bees (Anthophora plumipes) are often mistaken for bumblebees because of their round, fluffy appearance, but they live alone (not in colonies). The brown, male hairy-footed flower bees emerge a few weeks before the females. They visit Red dead-nettles, Grape hyacinths, Lungwort and other flowers with bell-shaped flowers sucking up the nectar with their long, straw-like tongues (proboscis) to build up their energy for mating when the females appear. If you plant these flowers they will come and are highly entertaining to observe zig zagging and darting around patches of these flowers emitting a loud, high ptiched buzz.
- Buffish mining bees (Andrena nigroaenea) – are easier to spot than some other similarly dark coloured mining bees, because of their size (about the same as a honeybee (10-11mm) and most importantly the luscious. mane of brown/gingery hair around their black thorax. The males emerge first and are more brown in colour, the females have more black hairs. They are one of the most common mining bees in southern England and in urban areas on blossoming fruit trees, shrubs and dandelions.
- Red mason bees (Osmia bicornis) – the males can emerge toward the end of the month if it’s warm to feed on blossoming fruit trees and shrubs. If you have a bee hotel you may see these cavity nesting bees checking out of the mud-plugged tubes when the crab apples are blossoming. They are a little smaller (12mm) than a honey bee (14mm), gingery coloured and have a rounder bottom. The males have long antennae and a pale moustache.
- Orange-tailed mining bee (Andrena haemorrhoa) – also known as the early mining bee is 7-9.5mm. The males are brown with a dull brown fluffy thorax and tiny orange hairs at the tip of their bottom. You may see them emerging from holes in garden lawns, parks, playing fields – anywhere with light soil in a sunny spot. Like many mining bees, although they are solitary bees that nest alone, they nest next door to each other, so you may see hundreds emerging at the same time. But don’t worry, solitary bees don’t sting! You may see the males on dandelions, blackthorn, willows and gorse. The females are much more striking with their rusty-red pile of hair on their thorax, but you’ll have to wait until next month to see them.
- Gwynne’s mining bee (Andrena bicolor) is a bit harder to spot, being 6-8mm, but look down and you may see them burrowing through soil on south-facing banks. The males are small (6-7.5m) and black, while the female (pictured above), which may not be out until next month, have a reddish-brown pile on the top of their thorax and hairy pollen brushes on the back legs.
- Common mini-miner (Andrena minutula) – as its name suggests is a diminutive mining bee and the most common one in lowland Britain. At only 4-5mm, it will be hard to spot, but try observing dandelions in spring and if you see a tiny, black bee with paler, yellowish hair around its face and thorax you could be a mini-miner.
How to tell a male Andrena bicolor apart from an Andrena haemorrhoa?
With difficulty! Andrena bicolor males are darker (black in colour), smaller (6-7.5m) and less hairy. Andrena haemorrhoa males are brown, a little bigger (up to 9.5m), and bit fluffier on the thorax, and of course the tip of their bottom is orange, hence their common name. They forage on the same blossoming trees, flowering shrubs and spring flowers such as wood anemone, dandelions, lesser celandine, and even daffodils, and bluebells later in spring. And they nest in very similar locations. So, good luck (FYI haemorrhoa is pronounced He/more/rower.)
Why are only the male solitary bees around this month?
The males emerge earlier than the females because they need to build up their strength for mating when they girls appear. They will seek out sources of nectar to give them energy, patches of flowers which could make good mating grounds, and will often buzz around nests waiting for the ladies to check-out.
Bee mimic:
Many people confuse the Dark-edged bee-fly (Bombylius major) for a bee (which is why we’ve included it). Not surprising, because it’s a great mimic – round and fluffy like a small bumblebee. It’s very visible in the spring, hovering around green alkanet. The easiest way to tell it apart from a bee is its long, spindly legs, hovering action, and two wings (bees have four wings) which stick out at a 45c angle.
Honeybees?
We’ve not included honeybees in our Bees to See in March guide because they are managed bees, and we are focusing on identifying and helping wild bees. But you will see honey bee (Apis mellifera) workers (10mm) this month for sure because they leave the hive when temperatures reach around 13c. Shaped like a wasp, they have black and amber stripes. Look up and you will see them high up on fruit trees, pussy willows and hazel and alder collecting nectar and pollen to take home to feed their queen and thousands of hungry larvae that will develop into workers and drones.
The way to tell male mining bees apart from honeybees is:
- size – honeybees are a bit bigger (10mm)
- location – honeybees tend to forage in trees at this time of year, and mining bees will sometimes be nearer to the ground emerging, or looking for a nest, but they will also forage in blossoming trees
- appearance – honeybees are more stripped, honey-coloured and are less hairy than the mining bees.
- It gets easier to tell them apart the more you look.
If you’d like more information on the life cycle of bees and how to help them, click here for bumblebees, here for solitary bees, and here for honey bees.
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