Birdwatch & Insects, Autumn-Winter 2017

Steve Jones rounds off the year, puzzled by the absence of some birds he expected to see.

Common Scarlet Darter Dragonfly Common Scarlet Darter Dragonfly Photo: Steve Jones

As we came into Autumn there was the expected movement, with lots of finches appearing, predominantly Chaffinch, Goldfinch with a few interspersed Serin, feeding on seed heads. I am always on the lookout for Brambling amongst the Chaffinch but it seems I have to make to do with the two sightings in early January. The Serin pictured below was at the pond (which still had very little water after the hot dry summer). The picture came out better than I was expecting, even though I was looking into the sun. I think it is probably a male in winter plumage, which becomes incredibly bright in Spring time.

Serin, 18th October 2017. Photo: Steve Jones

October 13th: Still seeing odd Swallows and this morning a Swift. Lots of Wagtails on the airfield, up to 50, and this week a big movement of Stonechats which I didn’t notice at all last year. I've seen 30 - 40 at various locations this week. I was very pleased with this picture of the goldfinch / gardelin - you really don't get too much closer than this. I took about 20 shots this morning, slowly edging closer, shielded by some grape vines.

Goldfinch, October 2017. Photo: Steve Jones

In October, 'Nature' journal publicized a report from Denmark1 showing changes in breeding patterns as well as a decline in numbers of starlings (sturnusa vulgaris) in a long-term study. Over 45 years from 1971 to 2015, dairy farmer Peder V. Thellesen logged the habits of the birds, which had 27 nesting boxes on his property2. The changes are attributed largely to climate change, and give cause for worry. Similarly, I know of in-depth studies of curlew on Dartmoor, which have suggested that curlew in the south of England could be extinct within 7 years, unless something is done. the situation is complex, but in this case predation is apparently the biggest problem.

October 18th: I saw a Swift two days ago at Jelsa fire station. There are still lots moving, most notably Stonechats. I have also seen several Pipits, but have not been able to get anywhere near close enough for a decent picture. Sparrow Hawks have been about regularly, but again they have escaped the camera. Robins are back in large numbers, and they are the most prominent singers at the moment. Robins may well be here throughout the year, but if they are, they're certainly not obvious.

Robin, December 2017. Photo: Steve Jones

October 19th: There was a flock of 20 plus Starlings at airfield this morning. Oddly, I hadn't seen one in all the time I had been going there until January/February of this year (I even mentioned this when we did an interview for the magazine Dobra Kob at the beginning of the year). And now this is the second lot I have seen this Autumn. What a surprise!

Starlings, 19th October 2017. Photo: Steve Jones

Towards the end of October I had another first for me and the island – Wood Lark, there were up to seven on the airfield for around a week.

Wood lark, October 2017. Photo: Steve Jones

Blackcaps seemed to be actively feeding on the remaining figs. I did manage a glimpse of another new species, a Firecrest.

Firecrest. Photo: John Ball

Stonechats were clearly passing through for about 10 days, I saw them regularly regularly down near the pond. Up to 50 Pied Wagtails were on the airfield amongst occasional pipits and Yellow Wagtails, and I was still seeing the odd Swallow and Swifts well into October. (A Grey Wagtail was often to be seen in Stari Grad, but he has not provided me with a decent picture). It's worth noting that 'pied wagtail' used to be the general term for two groups of birds which were very similar, whereas nowadays it's more usual to differentiate between 'pied wagtails' and 'white wagtails'. In fact most of the the ones on Hvar are white wagtails.

Yellow wagtail, 14th October 2017. Photo: Steve Jones

The latter part of October saw the arrival of Great Tits and Blue Tits. Sparrowhawks and Buzzards were also seen now on an almost daily basis, but both were extremely uncomfortable near the camera.

Buzzard, Dol, November 2017. Photo: Steve Jones

October 29th: I am 99% sure I had a Goldcrest the other day. I am not 100% certain, but fellow bird-watching enthusiast John Ball had a definite sighting with a fine photograph to prove it on October 13th, from the beach by the Senses resort in Vrboska, where he was staying. So Goldcrest is included in the year's list of sightings, bringing the total to just above 90 species for the year. Say I miss about 10% the true figure could be close to 100 species for the year.

Goldcrest, October 2017. Photograph: John Ball

This week saw the return of Black Redstarts (I first saw them on 2nd November last year, 2016). There were still Tawny Pipits on airfield and at last I managed a picture this week - not a brilliant one, but good enough for certain identification.

Tawny pipit. Photo: Steve Jones

 Common Darters (dragonflies ) are laying / mating at the remaining water in the pond.

Common darter dragonfly. Photo: Steve Jones

The Grey Wagtail keeps escaping the camera in Stari Grad but I have been seeing and hearing it most days now. Yesterday I saw good numbers of Clouded Yellow butterflies, but as for getting one on the camera ........... Ummmmm.

In November I started using the little bird feeding station I had created. Initially it was all very quiet, but once they got used to the food they started to come in numbers. I was inundated with Great Tits - up to 20 at one time -, also Blue Tits and Chaffinch.

Blue tit, November 2017. Photo: Steve Jones

A very occasional Dunnock appeared, also a Wren (but I have not been lucky enough to get a decent photograph of him yet). There were a few Black Redstarts around, but they didn't come to the feeders.

Great tit, November 2017. Photo: Steve Jones

In early December I was delighted with another new species on the Island - Hawfinch. I had only seen one briefly in the UK once before. I managed to see three in the following days, but not close enough for a picture, until I managed this on the 12th December.

Hawfinch, 12th December 2017. Photo: Steve Jones

December 19th. My feeding station has proved to be very successful, I could easily get rid of 1kg of bird food in a day (and at 18 kuna a kilo I am rationing it somewhat)!! It is interesting how the birds come in waves, appearing in grouops of 20 - 30, although there are mainly just three species. They feed just for a few minutes and then are gone. I suspect it is a strategy to fool the neighbouring cats, as three have taken to lying in wait at the bottom of the feeder or in a tree nearby.

I have still been hearing the Wren in the neighbourhood, but he's escaped the camera so far. I am sure I will get a picture at some stage during the winter. As we passed the shortest day you may well have noticed how the Blackbird was more prominent, starting to feed on the ivy berries. Before long they would be actively singing as the New Year begins………………. Bringing with it another list of bird species sightings!

With the end of another year upon us, it seems I have to settle for 93 species sighted in 2017, not the 100 I had been hoping for. I accept from the areas I cover I could have missed several species, but on balance, given the frequency with which I have visited “my patch” I am happy with what I have recorded. I don’t do any sea-watching – for no other reason than on the times I have tried, it has offered little, which is surprising. I am also puzzled as to why certain “common” species aren’t seen on the island, such as Magpie, Jay, Crow and Jackdaw, which I was used to seeing in large numbers in the UK. However, here there are lots of Hooded Crows, which are very apparent at the moment, so maybe they do the job of all those others. I also have not seen Long Tailed Tits or Coal Tits at all, and Blue Tits are rare, appearing only in single numbers. I am planning a couple of trips to the mainland in 2018 for some bird watching – it may just be to do with the location of the island.

© Steve Jones 2017

References:

1. Fox, A., Heldbjerg, H. 2017. Ornothology: Danish dairy farmer delivers data coup. Nature, 550, 333 (19 October 2017) doi:10.1038/550333b

2. Thellesen, P.V. 2017. Kuldstørrelse og yngletidspunkt hos Stær i Sydvestjylland, 1971-2015. Dansk Ornitol. Foren. Tidsskr. 111, 87-95.

For more of Steve's nature pictures, see his personal pages: Bird Pictures on Hvar 2017, and Butterflies of Hvar

Nalazite se ovdje: Home Novosti iz prirode Birdwatch & Insects, Autumn-Winter 2017

Eco Environment News feeds

  • Deal expected to pave way for further scientific study, boost conservation and open up access to Dorset chalk figure

    The mystery of when, how and – perhaps most importantly – why a giant naked figure was carved into a dizzyingly steep hillside in the English West Country has been a source of wonder and intrigue for centuries.

    Future generations may come closer to solving the puzzle of the Cerne Giant after the National Trust stepped in to buy 340 acres of land around the 55-metre (180ft) figure.

    Continue reading...

  • Exclusive: Brazil’s environment minister talks about climate inaction and the course we have to plot to save ourselves and the planet

    Soon after I returned home to Altamira from Cop30, I found myself talking about dinosaurs, meteors and “ambassadors of harm” with Brazil’s environment minister, Marina Silva.

    No one in government knows the rainforest better than Marina, as she is best known in Brazil, who was born and raised in the Amazon. No one is more aware of the sacrifices that environmental and land defenders have made than this associate of the murdered activist Chico Mendes. And no one worked harder to raise ambition at Cop30, the first climate summit in the Amazon, than her. So what, I asked, had it achieved?

    Continue reading...

  • Fertilising arable land with human waste leaves array of toxins that could re-enter food chain, study finds

    More than 520 chemicals have been found in English soils, including pharmaceutical products and toxins that were banned decades ago, because of the practice of spreading human waste to fertilise arable land.

    Research by scientists at the University of Leeds, published as a preprint in the Journal of Hazardous Materials, found a worrying array of chemicals in English soils. Close to half (46.4%) of the pharmaceutical substances detected had not been reported in previous global monitoring campaigns.

    Continue reading...

  • Pew Charitable Trusts finds plastic pollution will more than double globally by 2040 unless action taken

    The 66m tonnes of pollution from plastic packaging that enters the global environment each year could be almost eliminated by 2040 primarily by reuse and return schemes, significant new research reveals.

    In the most wide-ranging analysis of the global plastic system, the Pew Charitable Trusts, in collaboration with academics including at Imperial College London and the University of Oxford, said plastic, a material once called revolutionary and modern, was now putting public health, world economies and the future of the planet at risk.

    Continue reading...

  • These delicate cloud systems appear to be seeded by massive atmospheric waves thousands of miles away

    Cirrus clouds are our highest clouds; their delicate wispy strands are like an artist’s brushstrokes through the sky. During the day they are bright white and at dawn and dusk they can take on the hues of sunrise and sunset. But how are they made? New research reveals that some cirrus clouds are seeded by storms on the other side of the world, many thousands of miles away. This has implications for global heating as storm patterns shift.

    Meteorologists have long recognised two types of cirrus cloud: “anvil” cirrus, which spread out from large storm systems, and “in-situ” cirrus, which seem to form on their own. Telling them apart is tricky, but by applying a new computer analysis to cloud satellite data, researchers spotted that in-situ cirrus emerged in response to major storm systems on the other side of the Earth.

    Continue reading...

  • Inkpen, Berkshire: Drifting in and out of sleep on the woodland floor, I’m in searing pain, but far from alone

    It was nobody’s fault, but here I am, lying on the damp floor of a wood, half a mile from the road. Drifting down with the falling leaves are the voices of two women, too easily accepting of blame. I reassure them and try to sit up, but the high singing in my ears turns to static, the edges of the wood begin to pixelate, and I lie down again before I faint.

    Moments earlier, deep into Long Copse, Mum’s one-year-old labrador and my two-year-old collie crossbreed had met a young whippet. A case of the zoomies ensued, and as I turned to warn Mum, there was a sledgehammer blow to my lower leg as one, two or maybe all three dogs cannoned into me. Though I didn’t realise for two more days, my leg was broken before I hit the ground.

    Continue reading...

  • From the threat of superintelligent AI to the secrets of a longer life; plus the evolution of language and the restless genius of Francis Crick

    This felt like the year that AI really arrived. It is on our phones and laptops; it is creeping into digital and corporate infrastructure; it is changing the way we learn, work and create; and the global economy rests on the stratospheric valuations of the corporate giants vying to control it.

    But the unchecked rush to go faster and further could extinguish humanity, according to the surprisingly readable and chillingly plausible If Anyone Builds It, Everyone Dies (Bodley Head), by computer scientists Eliezer Yudkowsky and Nate Soares, which argues against creating superintelligent AI able to cognitively outpace Homo sapiens in all departments. “Even an AI that cares about understanding the universe is likely to annihilate humans as a side-effect,” they write, “because humans are not the most efficient method for producing truths … out of all possible ways to arrange matter.” Not exactly cheery Christmas reading but, as the machines literally calculate our demise, you’ll finally grasp all that tech bro lingo about tokens, weights and maximising preferences.

    Continue reading...

  • Project on ‘very poorly understood’ terrain and likely to pass through Rocky Mountain trench, which researchers say poses immense geological hazard

    When an earthquake in 2002 struck in a remote pocket of Alaska, the shock was the strongest ever recorded in the interior of the state. But, miraculously, an oil pipeline that crossed directly over the fault line was unscathed.

    Engineers behind the design of the 800-mile system were prepared. Knowing the high likelihood of seismic activity along the route, which bisected the Denali fault, they constructed sections where the pipeline rested on rail girders, allowing it to sway and shear without snapping.

    Continue reading...

  • The country is the world’s second-largest producer of the popular fish, and the biggest supplier to the US, but its farms are beset by accusations of dangerous labour conditions, antibiotic overuse and ecological harm

    Julia Cárcamo López’s house faces the sea, near enough to hear the gulls calling through the salt-encrusted windows. She lives in the small town of Maullín, on the edge of Chile’s Patagonia, an area where almost everyone works in the fishing industry.

    Outside, it is drizzling and the sky is darkening as she recalls 1 May 2019, one of the worst days of her life. “Two men knocked on my door and told me they had bad news: my husband had had an accident while working at sea,” she says. Since then, she has discovered that the accident seems to have been caused by negligence.

    Continue reading...

  • Banks of servers operating 24/7 generate massive amounts of heat, requiring power to run and cool them

    Datacentre power demand in Australia could triple in five years and is forecast to exceed by 2030 the energy used by electric vehicles.

    Datacentres now draw about 2% of electricity from the National Grid, about 4 terawatt hours of power. The Australian Energy Market Operator (Aemo) expects that share to rise rapidly – growing 25% year-on-year – to reach 12TWh, or 6% of grid demand, by 2030, and 12% by 2050.

    Continue reading...

Novosti: Cybermed.hr

Novosti: Biologija.com

Izvor nije pronađen