I’ve mentioned before a particular nail hole in the fencing at the end of box number 9 at NQ Growboxes. It’s the one where I found the Blue Mason Bee hiding a couple of weeks ago. It’s very popular with bees – I’ve seen them using it as a roosting spot on days when it’s cold or rainy, and I’d guess that it’s used at night too.
This year though, I’ve noticed something curious. I’ve been frequently finding bees of different species occupying the hole quite happily together.
Communal roosting is a widely known phenomenon in the natural world, especially in birds. Roosting together provides safety in numbers – innate protection from predators, as well as increased warmth. It’s thought that there are social benefits too – with the younger members of the roost learning skills from the older more experienced members. The older members in turn benefit from being able to choose the prime spots in the middle of the roost.
I don’t know whether anything like this is happening here, but if I had to venture a guess I’d say it was the warmth and shelter that’s pulling these bees in and encouraging them to share the space. They are definitely aware of each other and certainly don’t seem to mind each other’s company. I wonder if the fact they are both males has a bearing on this too – while they forage on similar food sources, they won’t be competing for nesting space and so maybe are more naturally tolerant of each other?
I also found another popular roosting spot in a crack in the top of the fence. On one dull day, I found three Hairy-Faced Yellow Face Bees (Hylaeus hyalinatus) piled in together having a snooze. For some reason, I still find it really comical that bees sleep on their backs. I can’t understand how their wings don’t get in the way!
On another day I found a single bee sheltering here during a rainstorm. If you look closely, you can see a raindrop on his eye!
I always used to dislike rainy, dull days. I rely mostly on natural light for my photography so on days like this it’s hard to get a good photo. However this year I’ve changed my mind somewhat – the bees stay much stiller in cooler conditions, and having worked out the places that they go to wait out the bad weather has made for some really interesting photo opportunities!
Our resident Hylaeus (Yellow-Faced Bee) has finally stopped nesting in the Oasis house… and the new spot she has chosen is interesting to say the least!
She’s taken over a cell that has recently been vacated by a Mason Wasp who hatched out this year. I initially saw a small, black insect going in and out of the cell and assumed that it was another Mason Wasp, perhaps one of the smaller species, until one morning I saw this tiny face looking back out at me.
When she’d sealed the cell, it looked like this. Hylaeus bees use a form of resin to seal their nest cells which is almost transparent. It doesn’t photograph brilliantly but it’s to the right of the nest hole here with the Mason Wasp original mud capping still in place on the left.
After finishing this nest hole the Hylaeus moved to another (empty this time) cell in another part of the same beehouse. She seems very protective of her nest cells and is unwilling to leave them, even at night. I found her bent double in this almost finished cell – the only way she would fit. This didn’t look like the most comfortable position but she was still there the next morning!
I’m not sure how common this type of nest tunnel recycling is, but if anyone knows I would love to find out! I’ve noticed the Leafcutter bees re-using cells that have been vacated by Mason Bees – but they clear out every trace of the former occupants, whereas this Hylaeus seemed to be taking advantage of the tunnel size and shape left by the wasp.
I’d forgotten just how busy I seem to get in Summer. Not only is the beekeeping season in full swing, but insects are everywhere, meaning I have loads of photos to sort out and process. Normally there’ll be the odd rainy day where I can blitz through and get things sorted and a blog post or two written – but not this year it seems! I’ve never known a dry spell like it. It’s now July 12th and we haven’t seen rain for a month, a state of affairs unheard of in Manchester! The soil is so dried out that it’s both like sand on the surface and rock hard and compacted underneath. The grass and plants are crying out for a good downpour – there’s only so much I can do with a watering can.
Perhaps trying to escape from the heat I found a frog hiding in the Frogitat! This sits in a shady corner between the ponds and I cover it in leaves each autumn to provide a handy spot for hibernation. I’ve never seen a frog using it in Summer though, until now!
I also keep finding frogs all around the garden at the moment. I think they are trying to find moisture and cooler temperatures wherever they can – crossing between the ponds and hiding under the hedging on the opposite side of the garden.
I suspect the heat this year has led this particular unwelcome visitor to expand it’s range. I’ve never seen Horseflies here before, but they’ve become a common visitor this month, plaguing me while I take photos of other insects.
I also spotted the garden’s first Ruby-Tailed Wasp of the year. These beautiful creatures patrol the South-East facing wall that part borders the garden, partly I think for the warmth and partly because that’s where the bee houses are. For these pretty looking creatures have a darker side. They use their downward facing antennae to seek out the nests of solitary bees and wasps, which they then parasitize. Sneaking into a nest left unattended, they lay their own eggs within it. Once the egg develops into a larvae it will eat the developing solitary bee before hatching out during the next summer. There are several species of Ruby-Tailed Wasp in the UK, and while I have found them in the garden each year and even spotted them exploring the bee houses, they never seem to nest here. I can only assume I don’t have the type of bee they require.
After seeing their success at NQ Growboxes, I planted an Ox-Eye Daisy last Autumn. It started flowering at the beginning of the month and has attracted a whole host of species, including a Leafcutter bee and the garden’s very first Colletes (Plasterer bee).
I was also hugely excited to find my first ever male Yellow Faced Bee in the garden – Hylaeus hyalinatus, or the Hairy-Faced Yellow Face Bee. I first noticed him skittering around the Pieris, and occasionally stopping to sunbathe on a leaf. On a couple of early mornings I also found him roosting in the beehouse.
Also during early mornings the ornamental thistles served as a hotel for sleeping bumblebees that had been caught out overnight.
While later in the day I was able to identify the garden’s first ever Cuckoo Bumblebee, the Forest Cuckoo bee (Bombus sylvestris).
While still sore about the early departure of the Red Mason bees this year, I was happy to see that Osmia leaiana, our Orange-Vented Mason Bee had completed her first nest cell. Instead of capping their nest cells with mud, these bees use chewed up leaves to form a kind of plant mastic instead.
Shortly afterwards, the Wood Carving Leafcutter bees (Megachile ligniseca) began to emerge from the bee houses. First came the males.
Then the females, who quickly began to cut leaves to construct their nests.
Shortly after this I spotted our first ever Sharp-Tailed Bee investigating the Leafcutter bee nests. I’m hoping this is a sign that we have a healthy Leafcutter population this year!
Finally while dead-heading the thistles (they love being dead-headed and will happily flower all Summer if you do this) I found this unusual looking caterpillar belonging to the Vapourer Moth.
Hylaeus bees -often known as ‘Yellow-Faced’ or ‘Masked’ bees due to their extensive facial markings – are the first unusual bees that I noticed at NQ Growboxes.
I’d been having an absolute pig of a day at work and missed the gym class I was booked on over lunchtime. So when I could finally escape the office – and in a thoroughly foul mood – I went for a wander and found myself at the growboxes. Where there seemed to be clouds of midgies swarming around some of the plants. Looking closer, the midgies appeared to have white and yellow faces. Surely not – but slowly I realised what I was seeing. Tiny bees. Hylaeus.
My bad mood instantly evaporated – I’d seen the odd female Hylaeus in our garden but I’d always wanted to see males with their extravagant masks, and here they were. I was back at the growboxes with my camera less than 12 hours later, and the rest is history – I’ve been stalking the bees and other wildlife there ever since.
Hylaeus are some seriously small bees. The largest has a wingspan of only 6mm, hence why they often look like clouds of tiny flies – especially as they have a habit of swarming around plants. They are predominantly black and white or black and yellow and are quite wasp-like in appearance. They nest in holes, either in the ground or in wood or stone structures. Worldwide they are a family of about 500 species (12 of which are found here in the UK) – and they are the only bee native to Hawaii where one species nests within the tiny holes found in coral.
I’ve got a real soft spot for these little bees, maybe because they are so tiny and easily overlooked.
The first Hylaeus to arrive this year was the Hairy-Faced Yellow Faced bee, Hyleaus hylinatus. Why is it called this you ask?
There are large numbers of these around this year, and like the other Hylaeus found at the growboxes they seem to love the Ox-Eye daisies found around the edges of the site and in the carpark beyond. They also seem partial to sunbathing on leaves in the sunnier spots, and can be told apart from the other species that are around by their orange antennae.
The second Hylaeus to arrive this year was the Large Yellow-Faced bee, Hylaeus signatus. This species prefers to feed on Weld and Mignonette, both of which seem to pop up around the growboxes. This one is quite a special bee, it’s recognised as a Nationally Scarce species so it’s great to see it doing so well at the Growboxes.
Then again, maybe it’s not so surprising. 15% of all records of Nationally Scarce species come from Brownfield sites, and there’s a logical reason for this.
The term ‘Brownfield’ often holds negative connotations, conjuring up visions of some kind of post-industrial wasteland ripe for redevelopment (especially when the alternative is building on Greenbelt land). But you only need to look at the growboxes and adjoining car park to see how fantastic sited like these can be for nature.
The land itself has been disturbed, leaving soft ground exposed which is perfect for the germination of wildflower seeds, the resulting plants becoming forage and shelter for insects.
The ground is often on different levels, creating sunny banks ideal for ground-nesting bees and other invertebrates. Where buildings have been demolished, parts of walls and the building structure often still remain – with mortar crumbling and full of nooks and crannies which form a desirable city-centre abode for insects and small mammals.
Wooden structures and fencing – as found at NQ Growboxes – contain old nail holes which are the perfect home for Leafcutter Bees.
The canal close by once brought barges into Industrial-Revolution era Manchester but is now a highway and home for Dragonflies and Damselflies who stop off at the Growboxes to hunt and to roost.
The centre of Manchester, in common with most city centres, tends to be a few degrees warmer than the surrounding areas. Bare ground on a Brownfield site like the car park next to the growboxes traps the heat and creates a warm microclimate – this few degrees of extra warmth can mean the difference between surviving and thriving for the resident insect populations.
As I was writing this post, another Yellow-Faced bee arrived at the growboxes – Hylaeus communis, the Common Yellow-Faced bee. Despite the name, I only saw this bee once last year so I was really hoping to see it again.
This is a particularly tiny bee, even compared with the other Hylaeus, so it’s incredibly difficult to photograph. Luckily I spotted it on a grey and overcast day when bees tend to sit stiller than normal, so managed to get a few good shots.
This one is fairly easy to tell apart from the other growbox species as long as you can get close enough for a good look. It’s facial markings are much yellower and curl up and around the antennae.
So this year I’ve now seen all 3 species of Hylaeus that I spotted last year. There are still more that could be present, so I’ll be keeping a keen look out.