Birdwatch, May 2019

Spring-time report from Steve Jones of Dol.

Black-Winged Stilt Black-Winged Stilt Photo: Steve Jones

For the latter part of April and early May I was in the UK so undoubtedly I missed some accurate dating of arrivals and potential sightings. That said on arriving back it was clear that Turtle Dove had returned as had the Red Backed Shrike. With the Red Backed Shrike I am little disappointed in the returning numbers, particularly near Dol. Last year I knew of three nests and certainly two nests had fledged young, one of which was in my garden. I assumed they would have returned but no evidence of that. I have seen two or three pairs around Dol but nowhere close by that I am aware. The bird box I made a few years ago was occupied with Great Tits, they laid ten eggs that had just hatched before I went to the UK, as I reported in April. I was afraid I would miss them, but when I came back there were five birds that had reached fledging stage, and they left the box on 11th May.

Inside the nesting box. Photo: Steve Jones

On Sunday May 12th the heavens opened, a neighbour recorded 110mm of rain. Clearly this made up for the lack of Winter rainfall. On May 13th I had never seen the pond so high and indeed with continuing poor weather throughout the rest of the month the water levels have remained so high apart from Grey Heron and passing Swallows, Swifts and Martins, nothing else has been there. This may prove interesting later in the season when birds pass by returning to their winter destinations.

Flooding! Photo: Steve Jones

 In addition to the pond being full it also flooded nearby fields and this has proved to a great source of species for many days. On the 13th I had never seen so many Swallows and Sand Martins, I would suggest up to about 200 birds constantly flying over picking up insects lying on or over the water. Amongst them were Yellow Wagtail and occasional Linnet. 

Waders needed! May 14th 2019. Photo: Steve Jones

May 15th brought in two Terns which were new to me and obviously a new sighting for the island. I am afraid I don’t have have decent pictures in flight which enabled me to identify the birds initially – these were White Winged Black Terns.

White-Winged Black Tern. Photo: Steve Jones

As the fields were so flooded I had to wade out 200-300 metres and at times water just below the tops of my wellingtons – the things we do for a record!!

Wetland, 14th May 2019. Photo: Steve Jones

These had gone by May 17th only to be replaced by four Black Winged Stilts. Not a species new to me but a new species for me to record on the Island, although there had been a sighting in Soline/Vrboska as I recall in 2016.

Black-Winged Stilt. Photo: Steve Jones

Also on May 17th a returning Black Headed Bunting, this is always one of the last birds to arrive. I am still not 100% sure that they breed here although I seem to see at least one every year, sometime I might only see it one time though. This year I have been fortunate that it was singing quite near the airfield and didn’t seem to mind me too much.

Black-Headed Bunting. Photo: Steve Jones
In addition to the Black winged Stilts which stayed for about four days were a few small waders. I identified four as Little Stints but there was another which was new to me and I had to ask help with the ID of this but three colleagues all came back with Curlew Sandpiper. As you can see not the greatest picture to work from. Although the flood waters still remain quite high the birds seem to have moved on except for three Little Egrets and Two Grey Heron.
Curlew Sandpiper. Photo: Steve Jones

May 21st brought in another species for the year which was the Squacco Heron, once again it found the water but probably not enough food to keep it going for very long. It stayed for around four days and whilst it wouldn’t tolerate me wading in the water too close to it, I managed to get a few pictures.

Squacco Heron. Photo: Steve Jones

May 24th brought another new species for the year. Not great pictures, but enough to identify the Red Footed Falcon.

Red-Footed Falcon. Photo: Steve Jones

Well as you can see quite a busy month, you can clearly see the results of the heavy rainfall. The last few days I have spent some time trying to track down a Cuckoo. In my patch I am hearing at least two males calling and probably three. In recent days I have heard a female on a couple of occasions. I am still at a loss as to what the host bird would be; Nightingale, Sardinian Warbler, Sub-Alpine Warbler or Corn Bunting perhaps?? I really have no idea but Sub-Alpine is definitely the most common of those species. It won’t be long before the Cuckoo depart but as to finding a potential host bird feeding a young Cuckoo is incredibly difficult. For those of you who don’t know Cuckoo, although I suspect most will know it’s call I have one very poor picture to leave you with taken on May 29th after 45 minutes of tracking it down.

Cuckoo. Photo: Steve Jones

My thanks to Jon Avon, Mike Southall and John Ball for ID on Curlew Sandpiper.

Already the calls on the ground in the day are starting to go quiet. However if people are interested in listening to the dawn chorus they seem ot be most active at about 04:40 hrs at the moment.

As always if anyone wants to forward sightings or even pictures I can be contacted through the web site or at Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.

© Steve Jones 2019.
For more of Steve's nature pictures, see his personal pages: Bird Pictures on Hvar 2017, Bird Pictures and Sightings on Hvar 2018, and Butterflies of Hvar
Nalazite se ovdje: Home Novosti iz prirode Birdwatch, May 2019

Novosti: Ekologija.hr

  • Ex-energy secretary Ed Miliband’s agenda appears undermined as money is diverted from renewables to defence

    Britain is unlikely to hit its targets on green heating after the cuts announced by John Healey this week, experts have warned, as critics of Ed Miliband claim the former energy secretary’s green agenda is being dismantled.

    The chancellor unveiled more than £3bn worth of cuts to the energy department’s budget this week, much of which will pay for higher defence spending.

    Continue reading...

  • This week’s best wildlife photographs from around the world

    Continue reading...

  • Turkey has been hit by powerful thunderstorms and a fatal tornado this week with more heavy rain expected

    Heavy rain and strong winds will continue to affect parts of south-eastern Europe and Turkey over the next few days, as an area of low pressure in the region has allowed for the formation of powerful thunderstorms. During a particularly intense thunderstorm in Antalya, a coastal city in the south-west of Turkey, the formation of a tornado resulted in the deaths of four construction workers on Tuesday. Authorities in Greece and Turkey have released severe rainfall and flooding warnings, as a further 100-150mm (nearly 4-6in) of rain is expected this week in central Greece and western parts of Turkey, with locally higher totals possible.

    Travelling eastwards towards south Asia, strong winds and heavy rainfall have swept across the Indian regions of Odisha and Andhra Pradesh as Cyclone Arnab made landfall. With wind gusts in excess of 85mph (140km/h) and rainfall totals in some regions exceeding 200mm, the severe storm has prompted mass evacuations of more than 180,000 people, as well as widespread disruption to energy and transport infrastructure. The cyclone will weaken as it continues to traverse northwards over the coming days, though will continue to deliver heavy rain to parts of northern and central India as it does so.

    Continue reading...

  • After UK’s hottest summer on record, Ardingly near Haywards Heath is just 19% full – and next-closest reservoir is unusable due to broken treatment works

    “You can see the water level at Ardingly going down and down. I don’t remember ever seeing it this low,” says Caroline Allan, a lifetime resident of Haywards Heath, the nearest town to one of England’s most depleted reservoirs.

    The Ardingly reservoir, managed by South East Water and serving about 95,000 properties in and around Haywards Heath and Uckfield in Sussex, is currently 19% full.

    Continue reading...

  • Scientists call for incentives to preserve vegetation as study highlights benefits of plentiful planting in London

    Your front garden could be a first line of defence against air pollution, according to a year-long field study in two London neighbourhoods.

    The UK’s 26m gardens cover nearly 5% of the country’s land area, but they account for a much larger share in urban areas. In Greater London, domestic gardens cover 41% of the city, compared with 27% of Cardiff and 23% of Edinburgh.

    Continue reading...

  • In this week’s newsletter: There are too many meetings, and not enough decisions, say experts – and time is running out

    • Don’t get Down to Earth delivered to your inbox? Sign up here

    When things are not going well at an environmental summit, organisers often tell delegates that the “world is watching” in an attempt to focus minds. But spend any time at biodiversity Cop17 in Armenia and it is clear that the world’s attention is elsewhere.

    The negotiating halls of Yerevan’s Meridian centre are subdued. Environment ministers have arrived from all corners of the world to plan their response to being so far behind the biodiversity targets they agreed four years ago. Right now, they appear on track to miss nearly all of them. They risk continuing the miserable record of never having met a biodiversity target they have set for themselves.

    The climate crisis will destroy our economies – we learned this 20 years ago. When will we act?

    Heat killed ‘staggering’ 50,000 people in Europe’s cities this summer, scientists warn

    Angry Labour MPs urge leadership not to overrule energy secretary on Rosebank

    Continue reading...

  • As many as 8 million people have been affected by food shortages, electricity blackouts and health clinic closures

    Extreme drought driven by an historic El Niño is affecting as many as 8 million people in Papua New Guinea, causing a cascade of issues from shortages of food and water, to electricity scarcity and schooling disruption.

    An influential coalition that includes churches, trade unions and business groups has said the Pacific nation is in the midst of a “national crisis”, but there appears to be “no coordinated plan to protect vulnerable communities from the worsening impacts of El Niño.”

    Continue reading...

  • There is no end in sight for the drivers of illegal mining, while police action appears ineffective

    Cora Bailey has been encountering illegal miners ever since she first started treating injured animals in the townships around Roodepoort, west of Johannesburg, in 1991. But as the price of gold has soared, so too has activity in the abandoned mine shafts that mark the area.

    In late September, dozens of zama zamas – the name given to illegal miners in South Africa, meaning roughly “to take a chance” in Zulu – arrived to dig for gold across the dirt road from her charity, Claw (Community Led Animal Welfare).

    Continue reading...

  • Replacing diesel-powered ferries with electric vessels could reduce emissions and improve air quality

    Cutting through New York Harbor in the shadow of the Statue of Liberty, the small white boat we were riding on caught the attention of passengers aboard a nearby sightseeing ferry.

    “It’s quite a curiosity at the moment,” Eric Laakmann, the chief executive and co-founder of Vessev, said.

    Climate Central is an independent group of scientists and communicators who research and report the facts about our changing climate and how it affects people’s lives.

    Continue reading...

  • This year thousands of the golden-coloured butterfly have arrived in Britain in what one expert calls ‘a bold attempt at colonisation’

    The Queen of Spain has invaded. The enigmatic British visits of this gorgeous golden-coloured butterfly with distinctively shaped, squared-off hindwings have been recorded by lepidopterists for four centuries. Usually there are barely a handful of sightings each summer of a butterfly that is widespread across continental Europe.

    This year, thousands have flown in, some from France and Spain that have reached the south coast, and others from the Netherlands, which have fluttered into East Anglia.

    Continue reading...

Novosti: Cybermed.hr

  • Novo istraživanje pokazuje da osobe s glioblastomom imaju aktivnije trombocite – stanice koje sudjeluju u zgrušavanju krvi. Trombociti također komuniciraju s drugim stanicama i mogu utjecati na imunološku aktivnost. Hiperaktivni trombociti kod osoba s glioblastomom usporavaju djelovanje T-stanica koje se bore protiv raka, što može pridonijeti rastu tumora i napredovanju bolesti.

  • Prepune karotenoida i drugih bioaktivnih spojeva, klice brokule i mikrozelenje privlače znanstvenu pozornost. Karotenoidi su prehrambeni pigmenti koji doprinose boji voća i povrća te pomažu u nekoliko fizioloških procesa. Karotenoidi uključuju karotenoide provitamina A, poput beta-karotena, alfa-karotena i beta-kriptoksantina, te karotenoide koji nisu provitamin A, poput luteina, zeaksantina i likopena. Karotenoidi mogu utjecati na osjetljivost na inzulin, metabolizam lipida, adipogenezu i upalnu signalizaciju.

  • Zubna caklina je visoko mineralizirani vanjski sloj zuba. Caklina štiti unutarnje slojeve zuba od šećera i kiselina koje unosimo hranom, kao i od svakodnevnog žvakanja, grizenja i trenja. Ona je najtvrđe tkivo u ljudskom tijelu.

  • Znanstvenici s Instituta za imunologiju La Jolla (LJI) i Sveučilišta u Washingtonu (UW) otkrili su da pacijenti s lupusom imaju neobične mutacije koje njihova tijela mogu pretvoriti u bojna polja. Spomenute su mutacije raširene u imunološkim stanicama zvanim neutrofili. Druge imunološke stanice doživljavaju mutirane neutrofile kao prijetnju – te pokušavaju uzvratiti napad. Ta unutarnja borba može doprinijeti razvoju bolnih upala, iscrpljujućih bolova u zglobovima i drugih ozbiljnih simptoma lupusa diljem tijela.

  • Rad u noćnim smjenama tijekom trudnoće povezan je s povećanim rizikom od neuroloških razvojnih abnormalnosti otkrivenih probirom kod djeteta do 4. godine života, otkriva novo straživanje. No, duljina noćnog prenatalnog sna tijekom ovog razdoblja može promijeniti ovu uočenu povezanost.

  • Niske razine vitamina B12 povezuju se s kardiovaskularnim bolestima, što je potaknulo znanstvenike da prouče kako nedostatak tog vitamina utječe na krvne žile, što klinička ispitivanja otkrivaju o uzimanju dodataka prehrani te koji bi pacijenti od toga mogli imati najviše koristi.

  • Neke osobe s poremećajem iz autističnog spektra imaju poteškoća s prilagodbom na promjenjive zahtjeve u svojoj okolini. U nedavno objavljenoj studiji znanstvenici su otkrili da bi te poteškoće mogle proizaći iz činjenice da su te osobe manje osjetljive na povratne informacije o vlastitom ponašanju u usporedbi s osobama koje nemaju autizam.

  • Pacijenti s uznapredovalim oblikom raka pluća živjeli su 56 posto dulje bez progresije bolesti kada je lokalna konsolidacijska radioterapija dodana standardnoj terapiji, uključujući kemoterapiju i/ili imunoterapiju, pokazuje nova studija.

  • Promjena u načinu primjene oksitocina nakon poroda može pomoći u smanjenju postporođajnog krvarenja, sugerira nova studija. Postporođajno krvarenje vodeći je uzrok majčinih bolesti i smrti. Iako se oksitocin široko koristi za pomoć maternici u kontrakciji i smanjenju krvarenja nakon poroda, optimalna doza i protokol primjene i dalje se proučavaju.

  • Rezultati nedavno objavljene studije sugeriraju da vaginalni mikrobiom može biti povezan s odabranim psihološkim osobinama i lokalnim metaboličkim obrascima. Različiti tipovi stanja vaginalne zajednice (CST) bili su povezani s odgovorom na nagradu, motivacijskim pogonom i inhibicijom ponašanja. Znanstvene analize sugeriraju da metaboliti mogu statistički objasniti neke od ovih povezanosti. Potrebne su veće longitudinalne studije žena kako bi se utvrdilo jesu li ovi obrasci važeći i kako bi se bolje razumjelo kako se vaginalni mikrobiom može povezati s psihološkim zdravljem.

Novosti: Biologija.com