ECO HVAR: CILJEVI I AKTIVNOSTI DOBROTVORNE UDRUGE

Okoliš

Namjere udruge Eco Hvar za poticanje projekata zaštite okoliša i srodne teme

Više...

Zdravlje

Ideje udruge Eco Hvar za poticanje zdravog načina života i srodne teme

Više.

Životinje

Ideje udruge Eco Hvar za poticanje projekata zaštite životinja i srodne teme

Više...

Nesting swallows: good luck promised!

Marion Podolski has the good fortune to have swallows nesting in her doorway in Vrboska on Hvar. Exciting and fascinating!

Barn swallow singing Barn swallow singing Charles J.Sharp, Sharp Photography

16th June 2017. I’m happy to report that the good fortune of our house is assured for the summer at least. This is due to the presence of a little swallow family nesting in the porch by our front door. We did try to explain to them that it wasn’t the quietest of locations, but neither parents nor babies seem particularly disturbed by our coming and going. And so, we have the privilege of watching this little brood develop at close quarters.

The nest in the porch. Photo: Marion Podolski

These are barn swallows, Hirundo rustica, as most European swallows are. They’re known locally as Lastavice, arriving on Hvar during April/May, along with their close cousins, the house martins. Vrboska provides a very suitable habitat for both, having an ideal source of mud for nest building in the upper harbour, and plenty of flying insects in the surrounding fields. We really appreciate the birds’ help in keeping down the mosquitoes!

The proud parent. Photo: Marion Podolski

I’m learning to tell the difference between swallows and martins, especially in their home life. What I thought was a rather unfinished nest in our porch turns out to be the typical open-cup shape built by swallows. It’s high up in the corner of the wall, built from gobs of mud. This is in contrast to the house martins more enclosed nest with entry hole, tucked up under the eaves of many a village house. And while the martins may build a row of nests together, the swallows tend to be more individual. Though I do understand that the next generation likes to nest near where they grew up, and our porch does have four corners!

House martin nests. Photo: Marion Podolski

We currently have four chicks in our nest, as I’m sorry to say that we lost one overboard during the week. It seemed in fine shape and pretty well fed, but unfortunately had not survived the fall when we found it on the step. We gave that one a decent burial, and have set a camera to monitor progress on the others and try to keep them safe.

Eyes open! Photo: Marion Podolski

Looking at today’s photos, I see that the chick on the left has open eyes and a feathery halo on its head! And they all have gaping mouths when Mum or Dad arrives with food, as they do often throughout the day.

Feeding frenzy. Photo: Marion Podolski

For swallows, eggs typically take between 14 to 21 days to hatch. The newborns are naked with closed eyes, which take up to 10 days to open.Within 17-24 days these babies will fledge, but will still hang around the nest site to be fed by Mum and Dad for a while. More photos to come.

To be continued as things develop…

Nesting swallows, part 2, 18th June 2017: growing feathers

A quick update on our Barn Swallow nestlings, as I’ve just been outside to check with the zoom lens. They certainly are growing fast and look much more alert! It’s now very clear that they have their eyes open and feathers are growing. And is that a tinge of russet colour?

Alert chicks. Photo: Marion Podolski

I can tell from the step below that nobody has fallen out so there must still be four in the nest, but I’m relieved when #4 at the back stretches and shows its wee beak. Everyone is safe. I can get on with clearing up the crap below them!

There's number 4! Photo: Marion Podolski

Nesting swallows part 3, 20th June 2017: real little birds now

Our little chicks are developing rapidly into miniature versions of their parents! Their wing feathers are almost completely in, although the tails are still stubby little markers for the graceful long forked tails of adulthood.

Stubby tails. Photo: Marion Podolski

As I stand quietly in the shade of the opposite doorway, one of the parents checks me out carefully. No doubt I’d have been in trouble if I tried to approach the nest more closely.

Parent checks me out. Photo: Marion Podolski

He/she was also offering me a nice view of the subtle colouring on the chest, and the underwing. I really can’t tell without seeing the tail whether this is Mum or Dad. We have strapped up a security camera on a coat rack, which gives us a view of the activity on the nest without encroaching on their privacy. It’s wide-angle, so not quite the resolution we’d like, but, hey, not bad for an impromptu nest cam! Here are some examples:

Swallows on the security camera

As the chicks grow, they seem increasingly crowded on the nest. They’re kind of piled up on top of each other by now.

Just like real birds. Photo: Marion Podolski

Which makes it all the harder for them to be testing out their wings in preparation for the big first flight, which must surely be coming any day now. I watched one climb to the top of the pile and flap away for a while, somewhat hampered by its siblings.

Stretching wings. Photo: Marion Podolski

And after its workout, a little stretch and a preening session to take care of the feathers!

Preening. Photo: Marion Podolski

Nesting swallows part 4, 23rd June 2017: testing wings

Our little swallow chicks are still on the nest, although there’s been plenty of flapping going on. We’ve taken to watching them on our nestcam, as they go very still and flat when we open the door. Not so interesting to watch! Here are a couple of photos, though, to show what a difference a few days makes. First is feeding time (20 June).

Dinner is served. Photo: Marion Podolski

And here they are a few days later, piled on top of one another. They’re looking much sleeker, and have clearly been looking after their new feathers. The face patterns are now individual and I’m guessing that big guy is the oldest, as he seems to be rather larger than the sibling alongside. And you can just make out the other two underneath.

Still four in the nest. Photo: Marion Podolski

Still waiting for that fledging moment…

Nesting swallows part 5: 23rd June 2017, Taking to the air

After watching the nest remotely for a few days, I was thrilled to catch sight of a chick take flight from the nest and land on the nearby light. That was Saturday 23 June, at 8:26am. The new fledgling was fed by a parent there, looked around for a while and returned to the nest, where it landed on top of its siblings! Yay! A successful first flight!!

First flight, June 23rd 2017. Photo: Marion Podolski, on nestcam

If I hadn’t seen it happen on the nestcam, we would not have known. For the rest of the day (a roasting 34 degrees C) all four chicks were piled on the nest as usual. And then this morning, this.

Empty nest. Photo: Marion Podolski

An empty nest. Arghhhh! Did we completely miss the rest of the babies taking flight? Where’d they go? But I can still hear them and there seem to be rather a lot of swallows flying around in our courtyard. Ah, there they are!

Fledglings on the porch light. Photo: Marion Podolski

Our porch light is a handy platform! From there, they ventured out to practise their flying again. From time to time they land on the wire, where I managed to catch a quick family portrait with one parent and 4 chicks.They are clearly smaller, and have not yet grown their long V-tails.

Swallow with fledglings on the line. Photo: Marion Podolski

Here’s a better close-up of three of the youngsters, looking like real swallows now. They were watching their sibling practise his aerial skills.

Young swallows on watch. Photo: Marion Podolski

He can fly pretty well already, but the landings definitely need work. Always the hardest part of learning to fly, I guess! Here he’s managed to park himself on the neighbour’s roof.

Slightly inexpert roof landing. Photo: Marion Podolski

Now that’s better! A nice clean landing perched back on the wire. That seems to be the new feeding station, and the parents will still feed them for some days to come. And very soon they’ll be catching their own insects.

More expert, landing on the line. Photo: Marion Podolski

I wonder when the parents will start another round? Please let me get my porch clean again first!

© Marion Podolski 2017

Reproduced by kind permission from Marion's exquisite pictorial blog Go Hvar. Many thanks from Eco Hvar!

Lead photograph by Charles J. Sharp, of Sharp Photography, published under Creative Commons License

Nalazite se ovdje: Home Novosti iz prirode Nesting swallows: good luck promised!

Eco Environment News feeds

  • Levels even lower than in severe drought year of 2022, data shows, with water firms urged to ‘be proactive’

    England’s reservoirs are at their lowest levels for a decade, new data reveals, as experts urge water companies to immediately put hosepipe bans in place.

    In June, reservoirs across the country were 76% full, which is below their level in the severe drought year of 2022 when they were at 77% capacity at this time in the summer.

    Continue reading...

  • Farmers are seeking ways to fend off birds who are stirring up soil in flooded paddy fields in Ferrara province

    An unusual bird is ravaging crops and infuriating farmers in north-eastern Italy: the flamingo.

    Flamingos are relatively recent arrivals in the area, and have settled into the flooded fields that produce rice for risotto in Ferrara province, between Venice and Ravenna.

    Continue reading...

  • Ynys Môn: Their energy was breathtaking, their display thrilling – though this was also a purposeful signal of their fitness

    Eventide, and calm waters were slowly departing the warm sands of a small Ynys Môn (Anglesey) bay. The dark igneous rocks that bound the bay had retained some midsummer heat, providing a comfortable vantage point to enjoy the sunset. In the shallows, a lone spectator watched the deep pink of the sea. My eyes followed hers and landed on two grey seals, their heads implanted in the iridescent waters. They watched, we watched, then they lazily slipped below, hardly a ripple raised.

    Enter the Risso’s dolphins. A pod of four surfaced stage left, injecting the scene with breathtaking energy; their stout, torpedo-shaped, pale grey bodies surging forth, tall dark dorsal fins ripping the limpid sea apart. One after another, they breached clear of the water, their power and scale full blown, heightened by the intimacy of the bay. A thrilling display – but also, scientifically, a purposeful, non-verbal signal of their intrinsic fitness to potential mates and competitors. In midsummer, Risso’s migrate from the pelagic deeps into the relatively shallow shelf waters of the Celtic Sea, perhaps providing more opportunities for social interactions.

    Continue reading...

  • Exclusive: 110 of 117 bodies of water tested by Environment Agency would fail standards, with levels in fish 322 times the planned limit

    Nearly all rivers, lakes and ponds in England tested for a range of Pfas, known as “forever chemicals”, exceed proposed new safety limits and 85% contain levels at least five times higher, analysis of official data reveals.

    Out of 117 water bodies tested by the Environment Agency for multiple types of Pfas, 110 would fail the safety standard, according to analysis by Wildlife and Countryside Link and the Rivers Trust.

    Continue reading...

  • Scientists say Perito Moreno, which for decades defied trend of glacial retreat, now rapidly losing mass

    One of the few stable glaciers in a warming world, Perito Moreno, in Santa Cruz province, Argentina, is now undergoing a possibly irreversible retreat, scientists say.

    Over the past seven years, it has lost 1.92 sq km (0.74 sq miles) of ice cover and its thickness is decreasing by up to 8 metres (26 ft) a year.

    Continue reading...

  • Worst-case scenario of 4.3C of warming could result in fiftyfold rise in heat-related deaths, researchers say

    More than 30,000 people a year in England and Wales could die from heat-related causes by the 2070s, scientists have warned.

    A new study calculates that heat mortality could rise more than fiftyfold in 50 years because of climate heating. Researchers at UCL and the London School of Hygiene & Tropical Medicine compared different potential scenarios, looking at levels of warming, measures to mitigate and adapt to the climate crisis, regional climatic differences and potential power outages. They also modelled the ageing population.

    Continue reading...

  • Woodland Trust’s 10 nominees from across the country highlight how trees inspire creative minds

    A cedar tree climbed by the Beatles, an oak that may have inspired Virginia Woolf and a lime representing peace in Northern Ireland are among those shortlisted for tree of the year 2025.

    Voting opens on Friday for the Woodland Trust’s annual competition, which aims to celebrate and raise awareness of rare, ancient or at-risk trees across the UK.

    Continue reading...

  • As the Texas flash flooding risk moved west, the National Weather Service pointed to the effect of burn scars from 2024

    After the extreme rainfall in Texas on 4 July, the flash flooding risk moved to New Mexico, with 89mm (3.5in) of rain falling in the Rio Ruidoso catchment area on Tuesday.

    In the town of Ruidoso, 35 homes were swept away and three people died. The National Weather Service attributed the extreme event to the wildfires that devastated the same area in 2024.

    Continue reading...

  • Abandoned fishing equipment haunts our oceans, killing coral, turtles, sharks and whales. But in Colombia’s Gulf of Tribugá, ‘guardians’ are on call to free entangled marine animals

    After a day of scuba diving, Luis Antonio “Toño” Lloreda was exhausted. Then a friend brought urgent news. “Toño, man, there’s a whale caught in a net out there.” Lloreda, 43, had freed other, smaller wildlife from fishing nets but this would be his first marine animal of such size.

    The four to five metres-long juvenile humpback, accompanied by its mother, had a net studded with hooks wrapped around its fin and mouth. One wrong move could have been fatal for Lloreda or the whale.

    Luis Antonio ‘Toño’ Lloreda holds a photo of the whale he freed from a fishing net

    Continue reading...

  • A €5.5bn project has transformed the Emscher from ‘the sewer of the Ruhr’ to a place where nature is starting to flourish

    Strolling beside the Emscher, the Tyczkowskis say it is the stench that they remember most about the river’s darker days.

    “The whole thing was filthy and it stank terribly,” says the couple, a retired watchmaker and tax adviser in their 80s. Were they ever tempted to take a dip? “No,” they laugh in disgust. “There were other things swimming inside.”

    Continue reading...

Novosti: Cybermed.hr

Novosti: Biologija.com

Izvor nije pronađen