Birdwatch, June - July 2017

The summer months were intensely hot. By June 12th there was very little about. On a trip to the pond that morning I found that the biggest area was about to evaporate later that day– there was a tiny little pool with the remaining fish all gasping. Equally I saw a Cormorant, probably stocking up with an easy source of food.

Scops Owl Scops Owl Photo: Steve Jones

There had been an influx of Alpine Swifts during those days, also a Cuckoo still calling near the pond 300-400 metres away.

Pond dried up. Photo: Vivian Grisogono

As I’m sure most of you know the longest day marks the sign of change in nature’s calendar and the singing for territory and mate virtually ceases. Nightingale were one of the first to disappear: from my observations this year I would suggest there were reasonable numbers of Nightingales singing in “my patch”. Sadly despite numerous attempts, I have still yet to photograph one.

Eugenie, Will and Steve by the pond. Photo: Vivian Grisogono

On July 15th, two keen bird-watchers, Will* and Eugenie, joined myself and Vivian for an early-morning tour of some bird-watching sites in our part of Hvar Island. They particularly wanted to see the Bee-eaters, so I had sent them a photograph I had taken on July 8th and warned them that good pictures might be hard to take on a single trip: "[Bee-eaters] don’t like you getting too close and also at the moment the sun is so bright difficult to get a really decent shot at this location. I’m also of the opinion they disperse to different locations in the day. Are you familiar with the call of Bee-eater? I can sometimes hear them over my garden in the afternoons but often quite high up when I come to look. So you might be lucky enough to hear them where you are staying....If you can get to Jelsa, although nothing is guaranteed, I should think we can knock off Bee-Eaters and Red Backed Shrike for you. Hoopoe are a little more difficult as are Woodchat Shrikes now, I’ve only seen two Hoopoe in the last month and both in flight whilst driving, and they have stopped calling now like most." (email July 9th 2017).

Turtle Dove, July 8th 2017. Photo: Steve Jones

I also sent through a picture of a Turtle Dove, taken on July 8th, as they are a fairly rare sight in the UK now. The response was pleasingly enthusiastic: "Love those bird shots you took Steve. It's true, Turtle Doves are so rare these days in the UK it'll be lovely to see them." The words of true bird-lovers!

Bee-eaters, July 8th 2017. Photo: Steve Jones

We started our quest in Pitve, moving on to the pond in the Stari Grad Plain, and then to Jelsa.

Steve, Eugenie, Will in Pitve, July 15th 2017. Photo: Vivian Grisogono

We were rewarded with more sightings than I expected, including an unknown wader at the pond. In Jelsa the Bee-eaters were happily swooping over their favourite nesting area.

Will watching the Bee-eaters, July 15th 2017. Photo: Vivian Grisogono

It was a great start to Will and Eugenie's brief weekend visit, which was followed up by them spotting the elusive Golden Oriole near their accommodation.

Golden Oriole, July 17th 2017. Photo: Will Rose

Without doubt the highlight of my summer was being able to catch the Scops Owl in daylight, I just happened to pick up a contact call. Before, I had managed several shots at dusk, when it was coming to the power cables outside my house every evening, but the pictures were poor. On July 13th, I had a Scops on wire outside my house during the day, sadly it was off as soon as it saw me, I would have loved a daytime picture.

Scops Owl at night, June 17th 2017. Photo: Steve Jones

Then, on July 18th: done it! Albeit early in the morning (5:15am) as opposed to dusk where it would perch on my electric cable every night.

Scops Owl, early morning July 18th 2017. Photo: Steve Jones

And then over the next couple of days came the real daytime shots. So I was delighted with these. Then I had some doubts as to whether it really was a Scops Owl, as reading about their behaviour Scops is apparently a true night owl, whereas the Little Owl (Sivi ćuk) can also be seen in the day, which I know from seeing them in the UK. Their calls are similar. However, a knowledgeable friend from the UK confirmed that in his opinion it was a Scops – they do have two forms, grey and brown.

Scops Owl July 20th 2017. Photo: Steve Jones

Despite frequent visits to the pond and the airfield throughout the summer it remained very quiet and nothing new was observed. Perhaps you too noticed that numbers of Swallows were slowly building up on cables towards the latter part of July: on July 20th I counted 56 Swallow lined up on a power cable on my way back from Stari Grad ……was it a daytime roost or were they getting ready to go perhaps…?? and I believe the first weekend of August saw a lot move on. This doesn’t mean you won’t see a Swallow after that, but they are seen in smaller groups, as are Swifts and House Martins. Similarly Bee-eaters mainly went in August but I was still hearing them passing overhead as late as 13th September.

Just-fledged Red-backed Shrike, July 27th 2017. Photo: Steve Jones

Photographed in and around Dol during the latter part of July, a just fledged Red Backed Shrike still being fed by parents. I was still seeing these birds around, mainly in single numbers, into mid September.

Red-backed Shrike feeding, July 27th 2017. Photo: Steve Jones

© Steve Jones, 2017

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

*Will Rose is an animator and illustrator, mainly for children's programmes, and he uses his interest in wildlife in his professional work: http://wilbojonson.tumblr.com/, and https://vimeo.com/170155454

Nalazite se ovdje: Home Novosti iz prirode Birdwatch, June - July 2017

Eco Environment News feeds

  • Exclusive: finding out who owns land will become simpler under plans to make the best use of green spaces and hit net zero targets

    Finding out who owns land in England is to become much simpler because a paywall will be lifted from large parts of the Land Registry, the government is to announce.

    A small number of landowners control the majority of land but finding out who owns what is difficult to piece together, even for government departments, owing to the way the Land Registry operates. Freeing up access will make it easier to determine ownership of key areas, such as river catchments, grouse moors and peatland.

    Continue reading...

  • Trillions of insects embark, largely unnoticed, on epic journeys every year across mountain ranges, deserts and seas, and it is only now, as their numbers suffer huge declines, that scientists are tracking their movements

    On a cloudless sunny day in October 1950, ornithologists Elizabeth and David Lack stood on a mountain pass in the Pyrenees and observed a once-in-a-lifetime spectacle – clouds of migrating insects.

    Up to 500 butterflies were fluttering past them every hour through the 2,200m-high Puerto de Bujaruelo mountain pass on the French-Spanish border. By mid-afternoon dragonflies were skimming through, outnumbering the butterflies by 10 to one. The spaces between were filled with thousands of tiny flies.

    Continue reading...

  • Frome, Somerset: A small patch of land, leased by the council, will be the site of a new community project. And so we descend, ready to rewrite its future

    Who crawled along Snail’s Bottom? Who found beauty on Bonnyleigh Hill? Who measured Little Acre Farm? This small patch of Somerset – like everywhere else in Britain – is a storied landscape, every feature named and memorialised by mostly forgotten individuals. Our job over the next two hours is to take one such name, one such story, and overwrite it with something better.

    Over a level crossing, through a kissing gate and on to a public footpath running down sloping ground. I had only been told the local epithet for this banana-shaped paddock after we moved here, though my arm already understood its origin. A priapic stallion, its coat studded with burdock burrs like a peppered mackerel, had clamped its jaws around my humerus. “That’s bitey horse field,” people told me. Bitey no more, for the poor fly-grazing beast has left, and our ever-proactive town council has secured the land on a 99-year lease.

    Continue reading...

  • Exclusive: Fixing a leak can be simple and equivalent to closing a coal power station, making lack of action maddening, say analysts

    The world’s worst mega-leaks of the potent greenhouse gas methane in 2025 have been revealed by an analysis of satellite data.

    The super-polluting plumes from oil and gas facilities have a colossal heating impact on the climate but often result from poor maintenance and can be simple to fix. The assessment found dozens of mega-leaks, each having the same global heating impact as a coal-fired power station.

    Continue reading...

  • Our photojournalist explores the Cornish landmark on the eve of its anniversary and meets some of its staff, visitors, plants and creatures

    “Give me a sleeping bag and I’ll happily sleep here overnight,” says Kim Mackintosh as she wanders amid the vibrant flora of the Mediterranean biome at the Eden Project on the eve of the tourist attraction’s 25th anniversary.

    Loupe in hand, the leader of the biome’s horticulture team is marvelling at an array of plants that have recently come into bloom, tenderly examining the yellow furry buds of an Acacia glaucoptera before flogging a Grevillea flower to dispense its rich, honey-flavoured nectar.

    Kim Mackintosh inspects the ‘kangaroo paw’ of an Anigozanthos through her loupe. All photographs by Jonny Weeks

    Continue reading...

  • From fluffy owlets to rosy-hued flamingos, Claire Rosen’s portraits of live birds took her on a journey that touched on colonialism, wallpaper design … and chickens

    Continue reading...

  • Fearing that extreme weather threatened its epic breaks, Oriente Salvaje is piloting the first surf insurance policy to protect livelihoods and ecosystems

    In the late 1990s in El Salvador, Rodrigo Barraza went in search of every surfer’s dream: a pristine wave, far from the crowds. Down a rough dirt track hours from any city, he found it: a little-known surf spot on the country’s eastern shores, where long lines of waves form a crisp right-hand break, surrounded by thousands of hectares of tropical forest.

    “I fell in love with the place,” says Barraza. In 2004, he opened a small hotel there, and along with some surfing friends, founded a tourism association. They developed sustainable tourism standards and committed to protect the surrounding biodiverse ecosystemof rare dry tropical forest, rivers and mangroves. They called it Oriente Salvaje – the “wild east”.

    Oriente Salvaje is known by surfers for its world-class breaks, Las Flores and Punto Mango

    Continue reading...

  • Perhaps the biggest surprise is that it tricks ants into moving its seeds with a scent that mimics their larvae

    Plants are superb at enticing animals to pollinate their flowers or carry off their seeds. But one plant co-opts an astonishing combination of fire, bees and ants to mastermind its reproduction.

    The South African Natal crocus, Apodolirion buchananii, has a gloriously bright white flower that emerges from the ground before its leaves appear in early spring. But the flower only blooms shortly after fire breaks out naturally in its native grasslands, leaving it standing like a beacon among the blackened grass to help lure bee pollinators, with an irresistible sweet scent that wafts through the air.

    Continue reading...

  • As the hit travelogue about the worlds beneath us becomes a film, its maker takes us on a voyage through Las Vegas storm drains and the caves of Yucatán – via Goatchurch Cavern in the bowels of Somerset

    Just off the B3134 in Somerset is a portal to the underworld. The smaller of two openings to Goatchurch Cavern, it’s called the Tradesman’s Entrance – and through it I am squeezing. After tumbling on my bum over damp smooth rock, lacerating a jumpsuit in the process, I venture down and down, sometimes crawling, sometimes standing upright, trying to find footholds in the dark.

    I’m here with film-maker Robert Petit, so he can show me something of what he’s been experiencing for the past five years, on his way to making an endearingly poetic documentary film called Underland, which riffs on nature-writer Robert Macfarlane’s bestselling 2019 subterranean travelogue of the same name. We’re heading 100ft underground to the Boulder Chamber where, over sugary snacks, I will quiz him about his obsession.

    Continue reading...

  • The detection at a popular park of ‘one of the worst invasive species to reach Australia’ is causing concern that suppression efforts are cracking

    The Newmarket women’s football side was gearing up for its clash against crosstown club New Farm United in Brisbane’s inner northern suburbs on Saturday morning when a message pinged in the team’s group chat.

    Just hours before kick-off, the game was postponed, to a date undetermined.

    Continue reading...

Novosti: Cybermed.hr

  • Jednostavan plan vježbanja kod kuće pomogao je pacijentima da ostanu aktivni tijekom kemoterapije, smanjujući mentalni umor i pokazujući potencijal za ublažavanje kemo mozga, posebno kod onih na kraćim ciklusima liječenja, pokazala je nova studija.

  • Japanski registar identificirao je slijepu točku u rutinskoj skrbi pacijenata s kroničnom bolešću bubrega (CKD). Razina bikarbonata u serumu rijetko se mjeri, što metaboličku acidozu uglavnom ostavlja neotkrivenom i stoga nedovoljno liječenom. Metabolička acidoza česta je komplikacija kronične bubrežne bolesti i povezana je s gubitkom mišićne mase, bolestima kostiju, inzulinskom rezistencijom, ubrzanim propadanjem bubrega i povećanom smrtnošću. Kliničke smjernice preporučuju liječenje kada razina bikarbonata u serumu padne ispod 22 mEq/L.

  • Rezultati nove studije sugeriraju da bi povećanje unosa mlijeka na preporučene razine moglo smanjiti učestalost moždanog udara i smanjiti nacionalne troškove zdravstvene zaštite povezane s moždanim udarom, ističući kako male promjene u prehrani mogu donijeti značajne dobitke za javno zdravstvo.

  • Stres u ranom životu može dovesti do probavnih problema kasnije u životu, uzrokovan promjenama u crijevima i simpatičkom živčanom sustavu, tvrdi nova studija. Naime, ova studija pokazuje da stresori mogu imati stvaran utjecaj na razvoj djeteta i dugoročno utjecati na probleme s crijevima, a razumijevanje uključenih mehanizama može pomoći u stvaranju ciljanijih terapija.

  • Kolorektalni karcinom ostaje jedan od vodećih uzroka smrtnosti povezane s rakom u svijetu, uglavnom zbog metastaza i ograničenog odgovora na imunoterapiju kod većine pacijenata. Iako su inhibitori imunoloških kontrolnih točaka transformirali liječenje određenih podtipova tumora, većina kolorektalnih karcinoma ostaje "imuno-hladna", što znači da ne uspijevaju pokrenuti učinkovit antitumorski imunitet.

  • Upala, obilježje Crohnove bolesti, donosi nakupine ili agregate imunoloških stanica u submukozu. Koristeći sekvenciranje RNK pojedinačnih stanica (scRNA-seq) za proučavanje fibroze kod Crohnove bolesti, znanstvenici su otkrili neobično nakupljavanje endotelnih stanica - stanica koje obično oblažu krvne žile - oko ovih skupina imunoloških stanica (poznatih kao Crohnovi limfoidni agregati ili CLA). Ove nakupine stanica krvnih žila signaliziraju stanicama koje grade ožiljke (fibroblasti/miofibroblasti) izravno ili putem makrofaga da počnu proizvoditi prekomjernu količinu kolagena ili ožiljnog tkiva, što sugerira da ovi Crohnovi limfoidni agregati mogu imati značajnu ulogu u pokretanju procesa fibroze.

  • Znanstvenici otkrivaju kako promjene u vaginalnom mikrobiomu tijekom trudnoće mogu utjecati na upalu i rizik od prijevremenog poroda, ukazujući na nove terapije temeljene na mikrobiomu koje bi mogle poboljšati zdravstvene ishode majke i dojenčadi. Jednako tako, studija ističe dokaze koji upućuju na to da je okruženje u kojem dominiraju Lactobacillusi obično povezano s imunološkom tolerancijom, dok je disbioza povezana s fiziološki štetnim upalnim kaskadama.

  • Studija provedena na gotovo 16.000 odraslih osoba sugerira da često preskakanje doručka može biti povezano s većom vjerojatnošću razvoja metaboličkog sindroma, glavnog faktora rizika za srčane bolesti. Budući da je metabolički sindrom glavni faktor rizika za kardiovaskularne bolesti, ovi rezultati ističu potencijalnu važnost redovite konzumacije doručka radi poboljšanja kardiometaboličkog zdravlja.

  • Gotovo svi duktalni adenokarcinomi gušterače (PDAC) nastaju aktiviranjem mutacija u onkogenu KRAS, koje se javljaju u više različitih alelnih oblika. Iako su značajni napori doveli do razvoja inhibitora koji ciljaju specifične mutantne KRAS proteine, jedini agensi trenutno odobreni za kliničku upotrebu selektivno ciljaju varijantu KRASG12C. Međutim, mutacije KRASG12C su izuzetno rijetke kod raka gušterače.

  • Nedostatak vitamina B2 čini tumorske stanice osjetljivijima na jedinstveni oblik stanične smrti, pokazala je nova studija. Ljudsko tijelo ne može samo proizvesti vitamin B2, poznat i kao riboflavin, te ga mora apsorbirati putem prehrane. Vitamin B2 se može naći u mliječnim proizvodima, jajima, mesu i zelenom povrću. Metabolizam ga pretvara u molekule koje, između ostalog, štite stanicu od oksidativnog oštećenja. No, sada je nova studija pokazala da ova funkcija vitamina B2 ima i lošu stranu: također štiti stanice raka. Naime, vitamin B2 igra ključnu ulogu u zaštiti stanica raka od feroptoze, posebnog oblika programirane stanične smrti.

Novosti: Biologija.com

Izvor nije pronađen