Thirty years of the barrier method and other science stories

Thirty years ago this month I wrote my first professional article. It was a short feature about the biggest organism having the biggest orgasm and was entitled ‘The Barrier Method’. It explained some of the chemistry, biology, and geography of the sex life of Australia’s Great Barrier Reef and appeared in the April 1990 issue of the Royal Society of Chemistry’s young chemists’ newsletter Gas Jar.

Incidentally, I  later renamed the magazine and helped relaunch it in full colour as New Elements with Editor Dr Mandy Mackenzie, which carried my Elemental Discoveries news round-up for several years from 1995 onwards.

I also used to publish Elemental Discoveries online on what was perhaps the first chemistry news website. It was to become a model for several news site launches over the following years that I instigated or was involved with for various organisations, including Reactive Reports for ACD/Labs, PSIGate Spotlight, which became Intute, Spectral Lines (for Wiley, now SpectroscopyNOW.com), Distillates for the RSC magazine Education in Chemistry, and a couple of others. Elemental Discoveries itself was hosted by ChemDraw creators Cambridge Soft for a couple of years before I relaunched it as Sciencebase.com in July 1999.

The article ‘The Barrier Method’ was chosen as runner-up in the 1990 Young Science Writer Awards hosted by The Daily Telegraph and the British Association for the Advancement of Science. A later article entitled “Not every sperm is sacred” won in 1991 and led to my writing about science for The Telegraph for several years after that. I got a merit award after the sperm and eggs with an article about xenon and anaesthesia, but sex science has remained a focus of much of my writing over the years, hah!

You can see a hopefully complete list of all my clients from the last thirty years as a freelance science writer here.

The photo accompanying the article was by Mrs Sciencebase long before she was Mrs Sciencebase. I can’t find the original magazine, hence the monochrome copy.

Learning a little birdsong

Back in the pre-covid good old days, when you could take a countryside or woodland walk and chat to others on the highways and byways, the conversation would almost always turn to birds, especially if one of you were carrying a set of bins or a camera with a big lens.

blackbird firethorn 4
Blackbird

If you reveal any sort of knowledge about which bird is which, people are even more surprised if you know which call or song you can here. I’ve not counted how many birds I recognise from their songs and calls but a few of the ones I know for definite would be: Blackbird, Robin, Dunnock, Wren, Song and Mistle Thrush, Magpie, Jay, Rook, Raven, Carrion Crow, Jackdaw, Blue, Great, and Long-tailed Tit, Buzzard, Goldcrest, Treecreeper, Yellowhammer, White Throat, Black Cap, Chiff Chaff, Reed Warbler, Reed Bunting, Bearded Reedling, Green and Great Spotted Woodpecker…I’ll stop now…

Goldcrest
Goldcrest

Anyway, there’s a crowdsourced website called Xeno-Canto where you can hear recordings of the calls and songs of birds from around the world.

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Male Chaffinch

But, as we’re all at home now, here’s a selection you might hear from an open window in your self-isolation.

Chaffinch – song, call

Blackbird – song, alarm call

Song Thrush – song

Robin – song, call

Dunnock – song, call

Wren – song

Great Tit – song

Chiffchaff – song

You can find the complete tick list for our garden birding here.

Bird Report 11 – Out and about – or not!

UPDATE: 20:45, same day – The National Trust has issued a new statement just hours after I posted this, no longer allowing access to their land other than the public places they manage.

UPDATE: March 2020. Oh, the irony. I wrote this article for our village newsletter long before the Covid-19 pandemic had arisen. Since then, so much has changed and so many places are shut down. The countryside is still open, of course.

So, if you’re not self-isolating, you’re not in a vulnerable group, and you’re practicing social distancing, there are still plenty of places to visit to see the wildlife. The very wildlife that is entirely unaware of humanity’s woes and may benefit in some way from falling pollution levels through lower numbers of flights and other activities.

Anyway, on with the original newsletter report:

I occasionally mention sightings of interesting bird species from places other than in and around Cottenham itself. It is possible, nay probable, that some readers might not know about other patches they might visit that are just a short hop from the village. Most, I’d admit are not within a short walk, but some are accessible by bicycle and certainly by car. I’ll leave readers to plot their own route and decide on their means of transport if they fancy visiting.

Among the more well-known spots is the National Trust’s Wicken Fen, which is always worth a visit, although it can get busy, which means less chance of seeing birds closeup. They usually have a noticeboard listing sightings, but I think that’s their overall tick-list and chances of seeing a range of species will depend on time of day, time of year, and the weather. There are commonly marsh harriers quartering over the parts farthest from the visitor centre, as well as some hen harriers. But, your mileage will vary.

You will be almost certain to see a buzzard or a kestrel, but they’re quite common over much of our local countryside. In the summer months you might catch sight of a hobby catching and eating dragonflies on the wing. Hobbies are a falcon that resembles the peregrine and the kestrel but sits, in size between the two, it’s a summer visitor. There are lots of Reed Buntings at the Fen and in the summer, you’ll likely see and hear various warblers, including reed warbler, sedge warbler, white throat, and others.

Head out beyond Wicken itself to Adventurer’s Fen and Burwell and Tubney Fens. If you want to see the short-eared owls that have taken to Burwell Fen and mentioned in my previous report, you will probably have to wait until next winter when they come back from their far-north breeding grounds. But, you will see barn owls anywhere around these fens at dusk on a good day. Oh, and on your way back don’t forget Kingfisher Bridge Nature Reserve, which has some interesting species as well as a couple of constructed nesting sites to attract sand martins.

There are plenty of fens around and plenty of lakes, commonly ex-gravel pits that play host to quite a range of species, with the odd rarity turning up every now and then. Check the lakes and land of RSPB Ouse Fen (coming from either the Needingworth or Over entrances) and if you’re keen-eyed you will almost undoubtedly see any of the above depending, again, depending on conditions and time of year. There are often snipe and green sandpipers to be spotted at the Reedbed Trail side of the reserve (Over) and a couple of pockets of bearded reedlings (formerly known as bearded tits). That species is quite shy and does not like the wind much, but if you hear a pinging type call from the reeds watch out for this unique species darting about, the males sporting their black sideburns on a grey face.

Great white egret, little egret, and grey heron frequent this area too and you might hear booming bitterns in the mating season or if you’re lucky spot one taking a short flight between nestling areas of the reedbeds. As mentioned in an earlier report, occasionally cranes will fly high over this, and other reserves, and in the summer months on a hot day replete with lots of dragonflies you might see half a dozen, if not more, hobbies.

On the Needingworth side and other areas waders, gulls, terns (in the summer, including black terns) are all keen on the feeding here. At the time of writing there were numerous smew on one lake as well as a plethora of more common waterfowl such as tufted duck and wigeon. Cormorants are frequent flyers here too and you will often see them on the water’s edge perched and drying off their wet wings in the classic pose of this sooty species.

So, where else might you visit for a bit of bird watching? RSPB Fen Drayton (which we used to known as Swavesey Lakes) has a similar profile to Ouse Fen but often has good-sized starling murmurations on winter dusks. NT Anglesey Abbey and Wimpole Hall are perhaps less for bird watching than tree and flower watching, but there are woodpeckers, treecreepers, hawfinches (sometimes at Wimpole), nuthatches, and the usual range of what we might call “garden birds” to see there, but in a more natural habitat than the garden. Milton Country Park at quiet times is also as good a place as any for a quick avian detour It has plenty of different types of gull and several kingfishers, which you might see darting back and forth across a lake to a central island. Rarities do turn up, such dunlins, goosander, some of the more obscure warblers, and others.

As I’ve hopefully helped you note in previous reports you don’t have to go far from your home in Cottenham to see any of dozens of species of bird. Check the back issues for more info on local warblers, owls, cranes, raptors, garden birds, and more.

Wilding the garden with Seedball

The lovely people at Seedball sent me a small sack of their products, a great mix of wildflower seeds embedded in clay pellets with natural fertilisers, minerals and chilli (to keep the invertebrates off until germination takes place). I’ve mentioned them before. I did some “wilding last year. This year, I’d planned to scale up, but maybe not quite the completely wilding the garden I’d initially thought about. I’ve previously shared details of the contents of the sack.

Bag clips for the seeds harvested from garden plants and the allotment at the end of last summer

Anyway, I’ve scooped out an additional chunk of lawn on the back garden, turned it over a couple of times, pulled our roots and grass that remained after the digging, did a final rake and then scattered some seeds I’d harvested from Corn Cockle (from a friend via hashtag #AllotmentLife), Yarrow, Rosebay Willow Herb, Purple Toadflax, Wild Fennel, and a couple of others. Raked over that and then scattered a good couple of handfuls of Seedball and watered copiously from the waterbutts.

It doesn’t look too exciting yet. A few other harvested seeds I scattered around the broken up ground under and behind our apple tree next to the almost one-year-old resurrected pond hashtag #pondlife.

 

Tyne Valley Birding

A bit of social distancing, walking, and birding in the Tyne Valley:

Birds seen during a couple of days of walking up and down each bank of the river:

Blackbird, Bullfinch, Buzzard, Chaffinch, Chiff Chaff (heard), Collared Dove, Cormorant,  Crow (Carrion),  Dove (Stock), Dunnock, Fieldfare, Goldcrest (heard), Goldfinch, Goosander, Gulls – Black headed, Herring, Lesser Black-backed, Heron, Jackdaw, Jay, Kestrel, Kittiwakes, Magpie, Mallard, Oystercatcher, Redwing, Robin, Rook, Swan – Mute and Whooper, Tit – Blue , Coal, Great – Wagtail – Gray and Pied – Wood pigeon, Wren, Yellowhammer.

Final morning along the river in Newcastle itself observing the Kittiwakes that nest and breed on the Tyne Bridge itself, this is essentially an inland colony, and uniquely nesting that fathest inland of any colony of this species anywhere in the world.

Kittiwakes

Female Goosander
Female and Male Goosander
Whooper Swans
Lesser Black-backed Gull
Kestrel
Song Thrush
Wren
Female Bullfinch, should that be Cowfinch?
Male Bullfinch
Grey Wagtail, showing its yellow rump

Sizewell and Suffolk

TL:DR – One of the natural side effects of planting a nuclear power station on the coast.


This platform was one of two “water rigs” one of which was used to draw cold seawater into Sizewell A nuclear power station; two magnox reactors operated there from 1966 to 2006. The spent “coolant” having generated its superheated steam to drive the turbines to drive the generators was then released back into the sea at the second platform, the one closer to the shore, pictured below.

Because the discharged water was at a slightly higher temperature than the sea, an oceanic microclimate formed here, which led to greater numbers of fish and birds utilising the thermal boom.

Most of the machinery and components were removed during decommissioning of the reactor, but birds such as Cormorants and numerous gull species still find the platforms useful as roosting sites. There was a time when Kittiwakes nested on the platforms, their presence led to delays in removing hazardous components during decommissioning. Ultimately, these two platforms will be removed. Shipping buoys are already in place to warn of sandbanks along this stretch of coast, so the platforms no longer have warning lights for that purpose as they once did.

Sizewell B, which you would recognise as the big white dome is a pressurised water reactor; the only commercial PWR in the UK. Sizewell C is on hold until “issues” and “concerns” are resolved. One can imagine that palms will be greased at some point and the public protest against it will be forgotten by all but those who live in the area.

Sizewell from RSPB Minsmere, May 2017

You can take a look at various photos from our recent trip to Thorpeness, Aldeburgh, and Sizewell here.

Incidentally, fans of musician Thomas Dolby will likely know Sizewell A as the setting of his music video for the song Europa and The Pirate Twins.

Sparrow names – Nicknames and slang for House Sparrows

TL:DR – There are lots of regional slang names for the House Sparrow.


Do you have a local word for Passer domesticus, the House Sparrow? Where I grew up in the North East of England we called them Spuggies, I hear from a Shropshire lad that it’s a common nickname for this species in that part of the country too. They’re also sometimes simply called spugs in Northern England. In the South P. domesticus is known as a sparr, sparrer (or Cockney sparrar), spadger (Northern Ireland too), spadgick, and phip or philip. That latter one is intriguing.

In Scotland, they’re often known as a spur or sprig (also Spriggies after a Mr Sprigg, apparently, that sounds unlikely given spriggies sounds like a dialact variation on spuggies). One contact on twitter (hahah!) said that his father who grew up in North Lanarkshire called them speugs, pronounced “spee-ugs”.

It’s very difficult to discern the etymology of these nicknames some sources cite spadger as originating in Leeds in the North rather than the South of England. But just as nicknames for games and people often arise with -er on the end. Bradders, was an occasional nickname for me as a bairn (child). Soccer is short for association football as Rugger is short for Rugby Football. Sparrow perhaps became sparrah, spugger, spuggie…

The same species is often called an English Sparrow in North America where its nicknames are commonly spatzie or spotsie, from the German Spatz. Australians might know the immigrant species as a Spag or Spoggie. And, perhaps less common Sprog or Sproggy and even spridgy or spudgy.

There are others: spyng, spurdie (from The Orkneys), chummy, craff, hoosie, row-dow, thatch sparrow, tile sparrow, and eave sparrow. (Cited here).

In Dutch, the species is known as a mus, or more specifically huismus, but that’s the official common name not a nickname. Spatz in German.

Reader Steve E emailed to tell us that in East London sparrows are often known as squidgers.

I must be going batty

Two Pipistrelle Bats flying around the corner of a pasture field at the edge of Rampton Spinney at lunchtime today. Pipistrelle comes from the Latin word for bat, which is vespertilio, which literally means evening bird (as in “vespers”). We usually two to three Pipistrelles circulating in our back garden on balmy, calm summer evenings. Each bat can eat up to 3000 flying insects every night, including moths…

Not seen a bat flying in broad daylight, except in a church, when it was presumably disturbed from its roost on a day we climbed the bell tower (with permission).

I tried to get a decent photo, but they’re fast-moving creatures and this is the best I could do of either of the pair even when they were flying overhead:

Of course, it’s winter and these two really ought to be tucked up in crevices in old trees, hibernating through the cold period. But, it’s been relatively warm this winter with perhaps only one or two mornings with a frost. Inordinately, warm weather and something that disturbed them may have brought them out of their self-imposed torpor early.

How emerging viruses jump from species to species

David Bradley reporting from the Royal Society, January 2004

The list of emergent viruses continues to grow. In the early 1990s, there was HIV, ebola, lassa, and others, almost all having jumped from their natural host species to humans. More recently, hepatitis C, Sin Nombre, West Nile, and of course SARS emerged. The common factor, said Dr Eddie Holmes of the University of Oxford, is that they use RNA rather than DNA to carry their genetic code.

Holmes believes that the genetics of our immune systems and viral genetics should be an equally important research focus. To infect a new species, an emerging virus has to overcome the new host’s immune system and to replicate in its cells, the success of which depends on both viral and host genetics and other factors.

But, Holmes asked, why do such pathogens emerge and what controls the emergence? Ecological change, as emphasized in Tony McMichael’s talk, is the governing factor – change in human proximity and change in host-species population density. The key to understanding lies in the fact that RNA viruses mutate a million times more rapidly than organisms with DNA. This endows them with great adaptability. On the other hand, a high mutation rate constrains viral evolution by capping the viral genome’s size, which limits adaptability. Higher mutation rates, after all, mean more chance of error in the viral genes. This “error-threshold”, explained Holmes, means that if a virus has to evolve a lot to jump between species then it is more likely to fail. We eat a multitude of plant viruses every day but no one has yet fallen prey to turnip mosaic virus.

The coronaviruses such as SARS, are different. They have a much bigger genome than other RNA viruses, which means that SARS and its relatives should evolve more slowly but their larger genome gives them greater adaptability. A better understanding of the constraints to RNA virus evolution will allow us to make better predictions about the emergence of new viruses and help us find improved therapeutic procedures. Rather than thinking about what RNA viruses can do, we should concentrate on their limitations.

Read on… Influenza and emerging viruses

Wilding our gardens with Seedball

A nice big package has arrived from the lovely people at Seedball. As I mentioned previously I am hoping to wild two patches of our front and back gardens to provide a couple of localised ecosystems for invertebrates, such as bees, butterflies, and moths and also to invest in those for the sake of the bats and birds.

Indeed, the various mixes that have arrived after discussions with Seedball are their bee mix, butterfly mix, shade mix, and a bat mix. Each has a wonderful mix wildflower seeds in their clay seed ball system that one simply spreads over the surface of a roughly prepared patch of soil (or in tubs). The balls have added nutrients and even some chilli powder to keep pests of them until the seeds have germinated.

I will be taking up turves from the lawns over the next couple of weeks (some of it will be used to make some dividing footways for #AllotmentLife. The remainder will be used to create some mounds behind at least one wilded area of the garden to add a bit of three-dimensionality to an otherwise flat and featureless garden. However, as with last year’s parallel project to the allotment we have #Pondlife and those plans were all a bit ad hoc and improvised when I pulled on my wellies and started doing the work. Thankfully, it seems to have worked, plants in the pond are growing, there are lots of snails, and we definitely have frogs using it as well as birds drinking from it.

The Bee Mix contains Seedballs to grow: Foxglove, Viper’s Bugloss, Birdsfoot Trefoil, Wild Marjoram, and Red Clover

The Butterfly Mix contains: Forget-me-not, Red Campion, Yarrow, Purple Loosestrife, and Musk Mallow

The Shade Mix has: Forget-me-not, Red Campion, Meadowsweet, Bellflower, Oxeye Daisy, Ragged Robin, and Meadow Buttercup

The Bat Mix contains: Evening Primrose, Cornflower, Corn Marigold, Borage, Wallflower, and Night-scented Stock.