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Bees In Early Spring

9/3/2017

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by Lesley McLaren
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With our garden thermometer registering 28°C this afternoon, it feels timely to talk about bees. They didn't totally disappear at all this winter. In February several spring-flowering shrubs were already blooming, and the other day I was intrigued to see many different types of bee already taking advantage of the nectar. Although I'm very fond of them - especially the endangered bumbles - I don't know much about them, so it's also timely that an email recently landed in my inbox, from Pollinis*, entitled "the huge and silent death of wild bees."

This triggered a little more research, as well as a vigil over several hours, to observe how many different species I could spot on one of bees' favourite plants in our garden. After a while I recognised the different buzz tones, and knew what approached before I saw it. In total I counted at least eight species/sub-species. Five were bumblebees, including a little one that hovered and darted at great speed here, there and everywhere (see above and immediately below). I used to think that only hoverflies hovered quite like this, but clearly I was mistaken.


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Initially I thought the next one below was the same species - but now I'm not so sure. It's hard to tell because of the different angles.
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This was also a great opportunity to try out my new camera. Capturing them on film - in focus - was challenging nevertheless, and a couple always contrived to forage on the other side of the bush from me! One of these was another bumble - much bigger - the colour of rich custard. I'm hoping to catch him unawares another day.

A tangerine-bottom (not its scientific name) also put in an appearance, but rarely stopped moving for more than a second or two. Despite the blurriness of these shots, he (or perhaps she) is just too gorgeous to leave out. I must have said it before, but bumbles look such friendly, happy creatures. Watching them for hours is no hardship.

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Sitting just a couple of feet from them is also quite safe. The little hoverer did investigate my blue T-shirt once or twice, but other than that they weren't bothered by or interested in me. I know bees are loath to sting, but was fascinated to read that they warn an aggressor by sticking a leg out!

After further reading told me that, since 2013, 4,574 different wild bee species have been identified in France, I haven't yet attempted to identify the ones I saw. The four pages of my insect book that are devoted to bees must be woefully inadequate. On glancing at the bumblebee section, however, I was intrigued to discover there are such things as "cuckoo bees", with very similar colouring. Described as "social parasites" these have no workers. The females lay eggs in bumble bee nests, often killing the queen, and bumblebee workers rear young cuckoos. I think all those above are bumbles, not cuckoos (bumbles are hairier) but I couldn't swear to it. Bruce has supplied some useful internet links that should help with identification, so I must have a look at those - when I feel strong enough!

At least two types of the more familiar stripey bumble also dropped by - one much larger and more orangey than the other. This bigger one (below right) spent a lot of time clambering through the plant rather than flying daintily from flower to flower.

As well as the bumbles, several small, brown bees visited, which might have been wild or from a hive nearby. They looked like social honey bees to me. I didn't manage to photograph those, but this one looked different - with pronounced, pretty stripes, close up.
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I love the way they bury their head right inside the flower - usefully brushing underneath those pollen-coated stamens.

The biggest, noisiest and arguably clumsiest visitor of the day was one whose identification I am fairly happy with: the Carpenter. Thanks partly to the light, this one is living up to the second half of its Latin name, Xylocopa violacea. It's also demonstrating why bees are  perfect pollinators.

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As for the "silent death" of these beautiful creatures, the Pollinis report contains interesting  facts as well as shocking statistics.

We hear a lot about threats to "domestic" or honey bees. Everything from parasites to pesticides and, more recently in France, predatory Asian hornets. Wild bees face the same threats, and scientists increasingly believe that wild bees are responsible for pollinating 80% of flowering plants worldwide.

Different species pollinate different plants. Those with longer tongues, for example, can get to nectar that other bees cannot reach. And only bumblebees can pollinate tomato plants, because only they have the strength to shake flowers hard enough to free the pollen. Artificial pollination methods are not, apparently, nearly as effective. At the moment, according to Pollinis, nearly half of the European bumblebee species is in decline. And already "more than one in six flowering plants is threatened with extinction in France". Studies in the Netherlands and the UK show that over 20% of flowering plants have simply disappeared in the last twenty years.

"Without [bees], there will be no mountain flowers; no blackberry or hawthorn bushes in the countryside, no chestnut or acacia woods; not to mention tens of thousands of insect, bird and mammal species that directly depend on them."

Sobering thoughts for a balmy spring day.

There was one particularly handsome bee I hoped to see, but didn't. As far as I know, it has been absent from our garden for years. Hopefully that's just because we no longer have the plant it loved so much (another blue flowering one). I shall be interested to repeat this exercise a little later in the season, when different plants are blooming - lavender for instance - to see what other species we have locally. I'll add any photos to my new gallery. In June-July our laurel hedge certainly attracts huge numbers of (mostly) honey bees. At times the hum has been so loud I've wondered if a swarm has taken up residence. But no. Since that laurel is non-flowering, the reason for its popularity has remained a mystery to me, until now. More research reveals that what attracts them is a sweet, sugary secretion at the base of new leaves. I look forward to their return as spring turns into summer.



*Pollinis is a nonprofit organization that campaigns for sustainable farming in Europe. It fights for the protection and conservation of pollinators, notably bees, and promotes the transition towards alternative agricultural practices, away from the systemic use of pesticides.

Ongoing research depends solely on donations.
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