Beware the March dagger

In the world of entomology, the naming conventions of moth species often reflect a fascinating interplay between scientific and vernacular language. While some moth species boast evocative common names like Angle Shades or Setaceous Hebrew Character, others, particularly those belonging to the category of micro moths, are identified solely by their scientific nomenclature, lacking universally recognized common names. This situation draws a curious parallel to the realm of dinosaurs, where species like Tyrannosaurus rex are known exclusively by their scientific designations.

Diurnea fagella moth
Diurnea fagella moth

However, amidst this taxonomy, there exists a notable exception: Diurnea fagella, a moth species that straddles both worlds of nomenclature. Officially classified by its scientific name, Diurnea fagella, this moth also bears vernacular names, albeit inconsistently. It is sometimes referred to as the March Dagger moth or the March Tubic, though within international and Lepidoptera communities, it is unequivocally recognized as Diurnea fagella.

This dual nomenclatural identity of D. fagella underscores the nuanced complexities of species classification and naming conventions within the field of entomology. While some species remain firmly entrenched in scientific terminology, others manage to acquire colloquial names, reflecting perhaps their significance or visibility.

Beyond the realm of moth identification, this phenomenon prompts broader reflections on the relationship between scientific precision and common language. It highlights the ways in which organisms are categorized, named, and understood by both experts and the general public. Moreover, it invites contemplation on the cultural and linguistic dynamics that shape our interactions with the natural world, illuminating the intricate tapestry of human-animal relationships.

Local White Stork – Ciconia ciconia

I’ve mentioned seeing an unringed White Stork, Ciconia ciconia, in our neighbourhood previously. It is probably a collection escapee and perhaps the same unringed bird that has in previous years been seen in Kent, Essex, and then a couple of years ago in a marina in a village not far from here called Earith and most recently near the flooded farmland on Smithy Fen in Cottenham.

Today, a friend reported that it was on a flood alongside Twentypence Road. Incidentally, it seems unlikely that this bird is a vagrant from continental Europe, but you never know. Some cynical birders would refer to an escapee as a plastic bird.

Zoomed and cropped photo of a White Stork from about 80 metres
Zoomed and cropped photo of a White Stork from about 100 metres

I headed out on my bike to try and catch sight of it, but it was no longer in the reported field. If only I’d checked my messages before I left, as another friend had sent me a photo from the “new” village ponds where he’d seen it and wanted to know what sort of bird it was. Anyway, Mrs Sciencebase having caught me up on Twentypence Road headed back towards home along the Cottenham Lode and spotted the bird in yet another flooded field. She called me to report in and I cycled up to see it. The sun was out for 20 minutes, so got some reasonable views of the bird standing on a mound of earth behind the old stud and stables.

Closer view of a White Stork in the collection at Old Hurst Farm. It's plausible that the Cottenham Stork is an escapee from their flock
Closer view of a White Stork in the collection at Old Hurst Farm

At this point, we messaged some other friends who we thought might be interested and they headed in and got good views too.

Stork in flight over Earith marina, 2022
Stork in flight over Earith marina, 2022

You may have noticed the White Stork’s scientific binomial uses the same word for genus and species, Ciconia ciconia. The word comes from the Latin for stork, so this bird is a Stork stork, you might say. Such a repeat in a name, a tautonym, indicates that this species is the type, or archetype, of the genus. See also: Cygnus cygnus (Whooper Swan), Bufo bufo (Common Toad), Buteo buteo (Common Buzzard), Carduelis carduelis, (European Goldfinch) and, of course, Gorilla gorilla gorilla (Western Lowland Gorilla).

The White Stork was still in the same field this morning although perhaps 200 metres away, hence the lower-quality photo. But, I’m sharing it to give you a sense of size of the stork relative to the Little Egret.

White Stork and Little Egret
White Stork and Little Egret, 200m distance and zoomed and cropped heavily hence the distortions

 

Reimagining the Seedballs

I’ve mentioned Seedball a few times previously. The team has very generously sent me samples of their product, which offers a novel way to rewild your garden, or indeed, any outdoor space, without the need to handle thousands of tiny seeds. The balls themselves act as a growth medium within which the seeds for any of dozens wildflowers can be held. You simply scatter the seed balls on your patch and water in.

Hummingbird Hawk-moth nectaring on Red Valerian
Hummingbird Hawk-moth nectaring on Red Valerian

In time, the seeds germinate and your patch is converted into a wonderland of wildflowers and almost immediately starts benefiting the local invertebrate community and thence the birds, and the whole garden ecosystem.

Seedball have now teamed up with the British Entomological Society to offer specific packs of Seedballs with wildflower species aimed at attracting particular species of invertebrates. Namely, Hummingbird Hawk-moth, Meadow Grasshopper, and Blue-tailed Damselfly. They’re running a nice competition on their Insta to win some!

Not New Year 2024 in Titchwell and Holkham

We didn’t make it to the north Norfolk coast for our usual new year yomp through the area, but we did make it to Titchwell for a couple of nights a month later. We had packed and departed for the coast by mid-afternoon. As we approached our lodgings, it was almost dark, a shadowy Tawny Owl flew across our path. By the time we arrived, it was fully dark and the last of the day’s Brent and Pink-footed Geese were noisily heading to roost.

Shore Lark, one of 14 in a flock at Holkham Gap

Shore Lark, one of 14 in a flock at Holkham Gap

We ate well that evening at Briarfields and the next day we were up reasonably early to see Marsh Harriers quartering the eastern end of RSPB Titchwell, we could easily see them from our breakfast table. There were at least four showing and one flew almost directly over to the hotel’s outdoor area.

Curlew after dawn at Briarfields, Titchwell
Curlew after dawn, Titchwell

The next breakfast there were no Marsh Harriers, but there were plenty of Curlew flying across the fields neighbouring the hotel’s grounds.

Mute Swan coming into land, Titchwell
Mute Swan coming into land, Titchwell

Anyway, back to Thursday, we kitted up and took the 20-minute walk to the nature reserve entrance. Turns out the connecting footpath from the hotel is only open four weeks of the year, in the autumn, when there is no bird breeding activity. Also turns out that if you try to head for the beach and walk back along to RSPB Titchwell, you are stymied in your quest by an impassible running channel. So, the road it was.

Snipe and prey, Titchwell. One of several visible on the edge of Patsy's Reedbed
Snipe and prey, Titchwell. One of several visible on the edge of Patsy’s Reedbed

A solitary Reeves’s Muntjac deer was picking up scraps beneath the bird feeders when we arrived, there were also Brambling around, although we didn’t see one until we were leaving.

Reeves's muntjac
Reeves’s muntjac – not a bird

We got wind that there was a Tawny Owl roosting in an ivy-covered tree, so we followed the boardwalk to see if we could spot it. Mrs Sciencebase, as ever, was first to catch a tiny glimpse of feathers through the ivy. The bird was very well hidden, you wouldn’t have known it was there without someone having heard it calling or seeing it come to roost to point out the precise tree.

Oystercatcher on Titchwell beach
Oystercatcher on Titchwell beach

We then trekked down to the beach. It was chilly, but the wind was not strong. Usual suspects on the water’s edge: Oystercatcher, gulls, Sanderlings skittering back and forth at the periphery of the tide, Dunlin, A couple of Bar-tailed Godwit.

Male Brambling at Titchwell
Another winter visitor – Brambling (M) sometimes known as the Mountain Finch or the Cock o’ the North, a cousin of the Chaffinch

Out to sea, we missed the Long-tailed Duck and the Red-breasted Merganser, but could see hundreds of Common Scoter. These are pretty much indistinguishable from the Black and Velvet species, unless they’re in flight, when you might, with a decent eye, and a decent scope, have something of a chance of distinguishing one from the others.

Flock of Golden Plover at Titchwell
Flock of Golden Plover at Titchwell
Golden Plover coming in to land
Golden Plover coming into land

Back on the reserve, a couple of Curlew were displaying some intriguing behaviour. It was impossible to know what they were doing. One seemed to be slightly more aggressive than the other and would approach and the other would back away. Then the pair would hop onto a muddy overhang with stems of some kind of plant in their bills and peck about as if they were musing on the possibility of making a nest. Although I don’t think this would have been a good site for them.

Grey Plover at Titchwell, one of several
One of several Grey Plover on our recent visit to RSPB Titchwell

We’ve still no idea if this was two males attempting to territorialise or a male and a female attempting to pair bond, or perhaps even two females. Maybe it was mother and daughter, with the former teaching the latter. That said they were pretty much the same size, so that seems a little unlikely.

Titchwell Teal
Titchwell Teal

Later, we saw another Curlew giving short shrift to a Redshank that was attempting to feed on the same patch of scrubby mud poking out of the water of the mere.

Curlew seeing off a Redshank
Curlew seeing off a Redshank, Titchwell
Curlew having seen off the Redshank
Curlew having seen off the Redshank

The next day was travelling home day but we decided, after a double-back to visit the nature reserve at Holkham Gap. There are usually Shore Lark to be seen here in the winter and Snow Bunting. We trudged about in the wind and saw lots of birders but none of the birds. There were again hundreds of Scoter out to sea.

Ruff at Holkham
Ruff at Holkham

We got wind of the Shore Lark, about 14, apparently at the most westerly point of the Holkham Gap and so headed in that direction. There were several birders with scopes heading in that direction. So, we felt like we were on a promise. A couple heading home confirmed that the Shore Lark were about half a mile further along the beach, where we could see two other birders watching them.

A tiny fraction of the flock of Pink-footed Geese at Holkham. There were several thousand.
A tiny fraction of the flock of Pink-footed Geese at Holkham

We set off towards the birds but could see dogwalkers arrive with a lively pup. The inevitable happened and the dog ran through the distant patch where the Shore Lark were feeding sending them in their little flock back towards us at great speed. They landed not 60 metres from where we stood, which was a spot of luck, you might say, and the closest views we have had of these charming winter visitors from the distant north.

One of three Little Grebe on the pond at Holkham on Friday
One of three Little Grebe (Dabchicks) on the pond at Holkham
Maintenance at the nature reserve, RSPB Titchwell
Maintenance at the nature reserve, RSPB Titchwell – not birds

Tongue and eye coordination in Hummingbird Hawk-moths

You will know by now just how fascinated I have been these last 5+ years by the the section of the Lepidoptera we know here as moths…and also the moths we call butterflies. One of the most wonderful of creatures in this group is the Hummingbird Hawk-moth (not to be confused with the rather different US species known as hummingbird moths).

This moth, Macroglossum stellatarum, is present across Europe and Asia. It’s a day-flying species that nectars on lots of different types of flower. It does look like a tiny hummingbird, but of course those birds are only found in the Americas so don’t overlap with airspace here.

Hummingbird hawk-moth

Anyway, a recent paper in PNAS discusses how the moths coordinate their proboscis, to feed and extract nectar from flowers. The research suggests that contrary to early theories, the moths use vision to coordinate proboscis movement, even though such complex eye–appendage coordination is unexpected in invertebrates.

Hummingbird hawk-moth

Visually guided appendage reaching, such as hand to eye coordination in apes is an everyday part of our lives. It involves the perception of the relative positions of the object and the appendage in three-dimensional space as the appendage moves toward the object. That takes a lot of brain power and great eyesight.

Hummingbird hawk-moth

Now, Anna Stöckl and colleagues tracked the movement of the proboscis of Hummingbird Hawk-moths as the moths explored artificial flower patterns. They found that the insects probed the visual patterns with their proboscis to a greater extent than a homogeneous flower background, suggesting visual guidance. The authors also compared the probing behaviour of the moths’ proboscis under occluded and free vision conditions. Vision occlusion impaired the moths’ ability to probe in alignment with artificial flower patterns, suggesting that visual feedback of the probing proboscis is required for targeted probing.

Visual guidance fine-tunes probing movements of an insect appendage, Proc Natl Acad Sci (USA), 2024, DOI: 10.1073/pnas.2306937121

What’s in a name?

What names we give the flora and fauna. Names are critical for scientific discourse and general conversation alike. They can be weird and wonderful, informative, confusing, hilarious even, and sometimes baffling. While common, or vernacular, names vary wildly, science, of course, has a relatively standardised method of naming living things. The common format, which is often colloquially known as the Latin name, is to have the species in a genus, a family group, and then to follow that genus name with the species name.

For example, in the UK, we might talk of the Snowdrop, or the Common Snowdrop. This delicate plant with white flowers that emerge in the spring is known to scientists as Galanthus nivalis. The genus is Galanthus and includes all the different species of snowdrops. The species name nivalis pins us to the Common Snowdrop.  The scientific name, or binomial, tells scientists and others the exact species regardless of their native tongue.

While the Common Snowdrop is not a particularly confusing example, in the birding world we might discuss Lapwing in the vernacular. It’s more formally known as the Northern Lapwing to distinguish it from other lapwing species. However, in English, this species has many other names, such as Peewit, Green Plover, Pyewipe, and Tuit; there will be dozens and dozens of names elsewhere, of course. The Lapwing’s scientific name is Vanellus vanellus. There should be no confusion when given the scientific name.

It is worth noting that in taxonomy, the naming and classification of living things, there is always change as we learn more about known species and discover new ones. Often the original scientific names created in the 1700s or the 1800s need to be updated as new knowledge, such as genetic information becomes available. The Lapwing was originally in the wader (shorebird) genus Stringa, which includes the shanks and tattlers, but is more correctly given its place among the other lapwings in Vanellus.

You may have noticed that Vanellus vanellus seems to have a double name. The genus and species name being the same. This is known as a tautonym, as if there were some tautology in its name. Usually, this tautonymic naming nomenclature refers to the fact that the species is the type of the genus. So, the Northern Lapwing is considered the archetypal species in its genus.

There are lots of examples of such tautonyms discussed previously on Sciencebase. I’ve also mentioned how scientific names are not always binomial, they can have three parts so that sub-species can be named formally. For example, the full scientific name for the Lowland Mountain Gorilla is an interesting tautonymic trinomial: Gorilla gorilla gorilla.

Scientific names are usually printed in italics, and the genus name takes a capital letter but the species and sub-species are all lower case. As in, the scientific name of the Green Sandpiper, Tringa ochropus. You will also note that there is a good reason for capitalising vernacular names so that when one reads the phrase Green Sandpiper one knows that it is the specific bird that is being discussed rather than a sandpiper that happens to be green. This is more obviously useful when discussing various other species with even more potentially ambiguous names, such as the Little Owl. If it were not capitalised, then are we talking about the specific Little Owl or a generic owl that happens to be small?

So far, so good.

The world of genetic updates, recording corrections, and other modifications aside, there is a growing problem in the taxonomic world. Unfortunately, there are numerous names, vernacular and scientific, that do not sit well with modern values. The first example of this that came on to the Sciencebase radar was the moth species Lymantria dispar. This beautiful moth can be something of a pest. But its English vernacular name is to some ears more problematic than the eating habits of its larvae because for most of the time we have recorded this species it has been known as the Gypsy Moth.

Like I said, in some situations a rather unfortunate name that has been removed in the USA where L. dispar is now known as the Spongy Moth. This new vernacular name alludes to the mass of eggs laid by the female of the species. The change presumably avoids the issue of a racially sensitive vernacular name. Whether or not we are to rename the eponymous and vintage de Havilland aircraft similarly remains to be seen. Company founder Geoffrey de Havilland was a keen amateur lepidopterist and gave several of his aircraft moth names.

Now, the obvious problem is that any name change means that all of the printed works that mention that name are instantaneously out of date and as the old name fades into history, there will come a point where younger readers will not know it at all, not know to search those ancient tomes for the Gypsy Moth, for example, and will fruitlessly search for the Spongy Moth. Of course, with the digitised knowledge, there is the potential to do a global search and replace on the term Gypsy Moth and to swap it for the name Spongy Moth. But, that too brings with it a problem, perhaps for the older readers who have not yet heard the new term who then search in vain for Gypsy Moth missing all those fascinating references to the Spongy.

Thankfully, we still have Lymantria dispar so there is no problem for the world of science in terms of the vernacular names. But, there is an emerging problem. My attention was drawn to a recent article entitled “Protecting stable biological nomenclatural systems enables universal communication“, which discusses the issues that science might face in terms of changes in taxonomic names.

The article suggests that a stable system of naming biological systems has facilitated unambiguous scientific communication internationally. It then adds that there have been calls for a reboot of the naming systems that asks for fairer, more inclusive and socially just scientific nomenclature. The article suggests that the urge to remove or revise names associated with controversial individuals or offensive words comes from a genuine and deep-felt place. However, there is the likelihood, the article suggests, that the damage would far outweigh the healing that might come from such revisions.

The main problems that could arise might be summarised as follows:

  • Historical accuracy and continuity: One of the primary problems with the notion of cancel culture in biological taxonomy is the potential erasure of historical names. Renaming species to align with modern values may result in the loss of valuable information, hindering the continuity of scientific knowledge.
  • Impact on the scientific literature: Changing vernacular and scientific names can create confusion and disrupt the integrity of scientific literature, as discussed above. It requires extensive efforts to update databases, publications, and educational materials, impacting the accessibility of information for researchers and students and indeed for the public at a time when the perception of science needs bolstering.
  • Unintended consequences: The attempt to eliminate potentially offensive names may lead to unintended consequences, such as the loss of cultural and historical context associated with the original names. Additionally, renaming species may not necessarily address the root issues related to inclusivity and justice.
  • Subjectivity in name assessment: Determining which names are deemed offensive or inappropriate is subjective and may vary among individuals and cultures. This subjectivity introduces challenges in developing a universally accepted standard for renaming biological entities. Many of the worrying terms may well have been misconstrued as having inappropriate meaning or associations that do not exist.

Of course, social sensitivity is important and removing or renaming offensive terms reflects a desire to avoid perpetuating harmful stereotypes or biases to improve inclusion and diversity within the scientific community.

Indeed, many of the terms that have been in place for at least a century or two are often misconceived as offensive simply because they emerged from similar etymological roots as words we now consider offensive in social contexts. Some of these terms are not inherently offensive and are often neutral Latin or Greek terms or are coincidentally the same when translated into another language as a word considered offensive locally. Some are thought to be referencing individuals that they are not. It can be confusing and would be even more so if terms were redacted that needn’t be.

What we need to avoid is the disruption of scientific communication and the erasure of historical continuity. It is worth noting that the current system has at its core transcultural communication and operational neutrality.

Suffolk Wildlife Trust – Lackford Lakes

In our pursuit of nature’s wonders, we do sometimes leave the county of Cambridgeshire and head into Norfolk, that’s our usual modus operandi. Occasionally though we head east into Suffolk instead. One of the closest nature destinations in that county is the SWT site of Lackford Lakes not far from Bury St Edmunds.

Male Siskin feeding in an alder tree at SWT Lackford Lakes
Male Siskin feeding in an alder tree

I should point out that we’re quite lucky living near Cambridge. We have some decent wildlife spots close by, we’re centrally placed almost with various reserves within a 20-minute drive. We’re quite central to many others that are no more than 40-50 minutes drive away. We can even get to the Norfolk or Suffolk coast in not much more than an hour if the traffic’s not too heavy.

Nuthatch perched on mossy log
Nuthatch

Anyway, we don’t get to Lackford Lakes as often as we should, but that said it then means that any trip is quite special when we do. And, while I don’t think we’ve seen any bird or insect species there that we haven’t seen in other places over the years, it’s always fun to visit just for those species that we don’t see commonly on our local patch, such as Siskin.

Foreground shows a Snipe with ruffled tail feathers and a male Teal in the background
Snipe with ruffled tail feathers

We also saw rabbit and muntjac deer, but here’s a list of the bird species we saw, in a vaguely sorted order. There may have been one or two other gull species:

  1. Goldcrest
  2. Siskin
  3. Goldfinch
  4. Bullfinch
  5. Great Tit
  6. Blue Tit
  7. Long-tailed Tit
  8. Coal Tit
  9. Marsh Tit
  10. Dunnock
  11. Chaffinch
  12. Greenfinch
  13. Robin
  14. Nuthatch
  15. Wren
  16. Blackbird
  17. Starling
  18. Lapwing
  19. Common Buzzard
  20. Snipe
  21. Cormorant
  22. Mallard
  23. Mute Swan
  24. Tufted Duck
  25. Gadwall
  26. Pochard
  27. Teal
  28. Wigeon
  29. Shelduck
  30. Great Crested Grebe
  31. Moorhen
  32. Coot
  33. Greylag Goose
  34. Canada Goose
  35. Black-headed Gull
  36. Carrion Crow
  37. Rook
  38. Jackdaw
  39. Magpie
  40. Wood Pigeon
  41. Collared Dove
  42. Pheasant
Nuthatch with fat pellet clinging to mossy log
Nuthatch with fat pellet
Flock of Snipe at Lackford Lakes
Flock of Snipe at Lackford Lakes
Three wading Snipe
Three wading Snipe

Six species of deer

The UK has six species of deer living wild.

Red Deer, Cervus elaphus – true native species found in Scotland, the Lake District, and on Exmoor, as well as Northern Ireland, much larger than all other deer, and indeed any other British mammal. Distinctive rusty, red-brown colour in summer. Short tail and pale rump patch.

Red Deer, English Lake District
Red Deer, English Lake District, very old, low-light, scanned film photo

Roe Deer, Capreolus capreolus – true native species present across the whole of England, Scotland, and Wales. Rusty red coat in summer, grey-ish in winter. Prominent white rump and no tail. Females have a small
tush or tuft of hair on their rump in winter.

Roe Deer, Long Drove, Cottenham
Roe Deer

Fallow, Dama dama – native and living freely across England and Wales and into Scotland as well as Northern Ireland, but also. Their coat is quite varied some pale, some less so but with white spots. Usually have a distinctive black inverted horseshoe shape on their rump, and a black stripe on their tail. Only species in the UK where the stags have palmate (hand-shaped) antlers.

Fallow Deer, Stamford
Fallow Deer

(Reeves’) Muntjac, Muntiacus reevesi – introduced species, also known as the Barking Deer for its canine-sounding call. Smallest of deer in UK. Russet brown, distinctive shape and hunched posture. Wide, flat tail with an often-displayed white underside. Present across all of southern England.

Reeves' Muntjac Deer
Reeves’ Muntjac Deer

Chinese Water, Hydropotes inermis – introduced species. 10 percent of world population found in East Anglia and a few other places in England. Usually russet brown coat, which turns grey in winter. Distinctive tusks in males rather than antlers. Often described as having a Teddy bear face with round and protuberant forward-facing ears. Short tail, rump has no distinctive markings, making it distinct.

Chinese Water Deer, RSPB Ouse Fen (Earith), showing male's tusks
Chinese Water Deer

Sika, Cervus nippon – introduced species originally on Brownsea Island but present in that region and North West Scotland, also Northern Ireland. Similar coats to Fallow Deer but shorter tail and a less distinct black stripe, distinctive white rump, also noticeable white glands on the hind legs of the deer.

Running Sika Deer, RSPB Arne
Running Sika Deer, RSPB Arne

More about deer and identification on the British Deer Society website.

Waxwing irruption

First Waxwings of the New Year.

Two of around 11 Waxwings glowering at birders from high perches
Two of around 11 Waxwings glowering at birders from high perches

There is an ongoing Bohemian Waxwing irruption in the UK with hundreds, if not thousands, of this most northerly species of bird having headed south in search of food over the last couple of months. I heard some flying over our house in November, but finally saw a tiny flock of four feeding on rowan trees outside somebody’s house opposite the primary school in the Cambridgeshire village of Coton. I got some nice photos but it was a dull day, so it was lovely to have a sunny New Year’s Day and to know that some had arrived to feed on rowans next to the railway station in another nearby village, Great Shelford.

Zoomed in and cropped Waxwing headshot
Zoomed in and cropped Waxwing headshot

We’d actually tried to see them them week before and noted a flock of about 20 in flight heading away from the station. But, on New Year’s Day, there were 11 glowering from the tall trees next to the railway station. They were plucking ivy berries from the plants growing on those trees but because there were so many birders, twitchers, and toggers near their favoured rowans, the birds had to choose their moments carefully to fly in and snatch a few berries in very brief bursts of feeding activity.

Waxwing lunging for one of the last rowan berries on the tree
Waxwing lunging for one of the last rowan berries on the tree
Waxwings posing whimsically as musical notes on a stave, perhaps
Waxwings posing whimsically as musical notes on a stave, perhaps
Waxwing in flight. Had to push the levels hard to get a photo out of this one as it was very underexposed in the shadows
Waxwing in flight

Waxwings head south from Scandinavia when the food supply falls short, usually in large numbers when they’ve had a good breeding season, and there’s simply not enough berries to go round. Each bird can eat hundreds of berries each day. Hence the irruptions. I check BirdGuides most days and they are still present in our neck of the woods in good-sized flocks that come and go. Next decent sunny day, I will head out to track down the closest flock. It’d be wonderful if they turned up in our village again (there was one at the start of the year).