Never The Same

The alarm clock buzzed at 0520. I was due to meet Andy and Bryan at 0630 for another ringing session near Oakenclough. The weather forecast of a 2mph wind with no rain proved to be accurate and we enjoyed an eventful morning of both ringing and birding. Three pairs of eyes and ears proved extremely useful during the usual lulls in ringing. 

After an initial round of Great Tits, Coal Tits, a Blue Tit and just a single Willow Warbler it seemed as if the session might be below par for this always productive site. But within an hour the species changed when visible migration began, and after five hours we had caught 51 birds of 10 species. 

While no two ringing sessions are ever the same it was finches top of the leader board again with yet more Goldfinch and Lesser Redpoll. We had handfuls of both Willow Warbler and Chiffchaff together with another Tree Pipit. 

Totals - 14 Goldfinch, 8 Lesser Redpoll, 6 Willow Warbler, 5 Goldcrest, 4 Chiffchaff, 4 Chaffinch, 4 Coal Tit, 3 Great Tit, 1 Long-tailed Tit, 1 Blue Tit and 1 Tree Pipit. 

Willow Warbler

Long-tailed Tit

 

The Ringing Office

Lesser Redpoll

Tree Pipit

Birding proved very interesting and began with our second Osprey of the week. This one followed a similar route to the one on Friday last by flying North to South alongside Harris End Fell before disappearing from view. Seven Grey Herons appeared together from the south, circled for a while before they lost height and dropped to the north and towards the fisheries near Scorton. 

Other raptors seen – 2 Sparrowhawk,1 Kestrel and 9 Buzzard. The Buzzards appeared late in the morning as a “kettle” of 7 plus 2. Three Ravens added to the action on high. 

We noted a steady stream of high-flying hirundines with Swallows to the fore. 60+ Goldfinch and 30+ Chaffinch dominated the arriving finches where Lesser Redpolls seemed less vocal than normal. We were a little surprised to catch nine redpolls when so few seemed to be around. 

An initial count of 5 or 6 Mistle Thrushes turned into a massive 29 when two parties that arrived unseen at the North West corner of the site took to the sky flying east. As the thrushes spread out we counted a flock of 22 and then a gang of 7, all heading the same way. 

It’s often in September that people mistakenly report Fieldfares arriving early in the UK, when in fact Fieldfares do not really arrive here from Scandinavia until late September/October. What those observers have actually seen is a far less common but not unknown flock of Mistle Thrushes. Just last week a local birder, Bryan Yorke saw over 80 Mistle Thrushes in the hills north of Lancaster. 

Mistle Thrush

Seems like our largest UK thrush has enjoyed a good breeding season! 

Other birds noted in the plantation – a single Nuthatch and 2 or more Bullfinch.

Linking today to Eileen's Saturday.

First Vis Mig

I’d met up with Andy at Oakenclough at 0630 for a ringing session. All started fairly quiet and uneventful but as the minutes ticked by it became clear that the morning would see the first substantial visible migration of the autumn. 

An early highlight was the Osprey that powered in over the trees from the North West about 8am and then turned as if to plunge for a trout in the reservoir. It hovered briefly but then turned again and continued on a southerly track and out of sight to leave the trout for the Cormorants and anglers. 

There were plenty of other birds heading south, mainly finches and Swallows, but also 2 Song Thrush. After five hours we had counted 95+ Goldfinch, 45+ Lesser Redpoll, 30+ Chaffinch, 4+ Siskin and 4+ Tree Pipits arriving from the north and heading either into or over our ringing site. 

Our catch of 47 birds reflected the species we’d seen plus a few warblers that linger on site and the inevitable tit species of woodland habitat. Totals - 19 Goldfinch, 14 Lesser Redpoll, 4 Blue Tit, 2 Chaffinch, 2 Tree Pipit, 1 Chiffchaff, 1 Willow Warbler, 1 Wren, 1 Coal Tit, 1 Great Tit and 1 Goldcrest. 

Every single one of the Lesser Redpolls proved to be a recent juvenile, so young in fact that we considered most to be at least second broods, possibly third. Likewise the Goldfinches caught. None of the Lesser Redpolls could be sexed and all but two of the brown-headed Goldfinches were left unsexed. 

Lesser Redpoll

Lesser Redpoll

Goldfinch

Chaffinch

We missed a third Tree Pipit when one climbed out of the mist net before Andy could reach it. 

Tree Pipit

On the way home I clocked 2 Buzzard, 15 Pied Wagtails and good numbers of Swallows. At one farm I slowed to see a young Sparrowhawk try to take a Swallow in flight. The Swallow won by easily outmanoeuvring the inexperienced hawk. 

The forecast looks OK for Saturday with a wind speed of less than 10mph. If so we’re heading for Gulf Lane and a catch of more Linnets as part of Project Linnet 2017/2018.

Linking today with Eileen's Blog.

Yes or No. Touch and Go.

Text messages flew back and forth at 5am this morning. There’d been rain most of the night with a forecast that was a little “iffy”, especially so for a site on the edge of the Bowland fells. There seemed just a small window of opportunity for a ringing session. 

“Let’s go for it” was the final message, so I met up with Andy at 0615 at Oakenclough. The morning remained grey with the camera set at ISO1600 but in between an odd light shower or two we managed a respectable 33 birds. 

Our total included one or two warblers and our second Tree Pipit of the week. 34 birds - 11 Goldfinch, 7 Goldcrest, 6 Coal Tit, 3 Robin, 2 Willow Warbler, 1 Great Tit, 1 Blue Tit, 1 Chaffinch, 1 Chiffchaff and 1 Tree Pipit. 

Tree Pipit

Goldfinches were around in some numbers today. As noted earlier in the week, there are Goldfinch flocks beginning to appear in a number of localities. 

Goldfinch

Goldfinch

One of our two new Willow Warblers was a tiny individual. The juvenile female had a wing length of 60mm and a weight of 7gms, much on the lower limits of Willow Warbler size and more equivalent to the biometrics of a Chiffchaff. 

Willow Warbler

At 1030 we packed in when a strengthening wind brought a heavy shower. 

Other birds noted this morning – 1 Jay, 4 Lesser Redpoll, 10 Swallow, 30+ Goldfinch. 

Finally, and having the delight of seeing magnificent Marsh Harriers in action this week I was appalled to see the video below. There truly are some disgusting individuals at large in the British countryside.

Please watch it and if you feel as aggrieved as I do, write to your Member of Parliament about what is happening to raptors in upland Britain.

Linking today to World Bird Wednesday. Take a look.

It’s A Start

I set off early to meet Andy at Oakenclough where we planned maintenance of net rides and bamboo poles in preparation for our autumn and winter ringing on site. We leave the 12ft poles there in all weathers so as to minimise lugging them around each time we visit. Insulation tape stops water seeping into the bamboo and also helps the net loops slide up and down. 

Bamboos

Although all seemed quiet we decided to put a couple of nets up as we repaired the poles one-by-one. To be truthful we didn’t expect much of a catch so were pleasantly surprised with the outcome. 

After four hours we called it a day with a catch of 29 birds of 11 species. This included one Willow Warbler recapture from April 2017, a resident male. Our totals: 8 Willow Warbler, 6 Goldcrest, 3 Chiffchaff, 3 Robin, 2 Great Tit, 2 Blue Tit, 1 Goldfinch, 1 Chaffinch, 1 Sedge Warbler, 1 Tree Pipit and 1 Redstart. 

Ageing autumn Willow Warblers in the field is well-nigh impossible but much easier in the hand. The potential problem is that adults go through a complete autumn moult while juveniles undertake a partial moult, so that by late summer/early August individual birds of different ages appear the same. In the hand, in general but not absolutely, adults have whiter bellies than first year birds but this on its own and because of the separate moult strategies and species’ races variation, is not enough to separate the two age groups. Reliable ageing of this species also involves checking the wear and shape of both tail feathers and flight feathers and then comparing the ground colour and the gloss of the same feather tracts. 

Willow Warbler - adult

Willow Warbler- juvenile/first year

Oakenclough is a strictly woodland site where we expect to catch woodland species. Imagine our surprise then to catch a Sedge Warbler, the first ever here. When we thought about it more, the emergent vegetation that lines the margins of a nearby reservoir fits the bill of a Sedge Warbler’s preferred reed scrub habitat, but we don’t expect to catch another.

Sedge Warbler

The Sedge Warbler had classic fault bars across the tail. Fault bars are translucent cross stripes where during the growth of the feather a disturbance has taken place, under stressful and adverse environmental conditions, usually hunger and/or bad weather,

Fault Bars - Sedge Warbler

We don’t catch many Redstarts, here or anywhere so were pleasantly surprised to find we had a juvenile/first year male. 

Redstart

Redstart

Our catch of Goldcrest included three juveniles/first year birds from on-site or very close-by. 

Goldcrest

We caught a single Tree Pipit, a species which bred here until about the early 1980s when habitat changes and range retraction led to quite marked losses in breeding numbers. 

Tree Pipit

 

The graph below shows the population changes of Tree Pipit found by combined results from Common Bird Census and Breeding Bird Survey 1966 -2009, BTO. 

Tree Pipit - BTO

Species noted but not caught today included Swallow, Pied Wagtail, Great-spotted Woodpecker, Lesser Redpoll and Kestrel.

Well, what do you know? two o' clock and it's raining again. At  least we made a start on our Oakenclough year.

Linking today to Eileen's Saturday and Stewart's World Bird Wednesday.

More Polls

Overnight had been clear.There was a slight frost on the screen as the instrument panel lit up - “beware of possible ice”.

I was travelling back to the hills today where I met up with Andy in the expectation of more finches and maybe a warbler or two; especially so since Andy’s ringing near his home on Friday produced 5 Meadow Pipits, a couple of Great-spotted Woodpeckers, a Tree Pipit, a Blackcap and a Willow Warbler. 

Tree Pipit

Try as we might we caught no Tree Pipits today nor did we catch a singing Blackcap, and one only of the 4 Willow Warblers around. So we made do with yet more Lesser Redpolls amongst the 19 birds of 5 species: 13 Lesser Redpoll, 3 Goldfinch, 1 Siskin, 1 Chaffinch, 1 Willow Warbler. 

Willow Warbler

Siskin

The very first Lesser Redpoll caught was already ringed but with ring number not of our own sequences. At number S295643 the record is now sent to the BTO who interrogate their data to discover the who, when and where. 

Just one Siskin today out of the eight or ten we saw and heard. At 8th April the species’ spring passage may be over. 

One of the Lesser Redpolls we caught had greyer tones than the other more typically brown and buff Lessers caught at the same time. The unwary might be tempted to call it a Common (Mealy) Redpoll but at this time of year and as a second year female the plumage is very worn by way of extensive whitish covert bars and fringes to the flight feathers. The bird was Lesser Redpoll size and “jizz” and we concluded it to be this species alone. Two images of the same bird below. The top one is taken in goodish sunny light, the second one in the shade of the car's hatchback.

Lesser Redpoll

Lesser Redpoll

Thankfully and not before time the Common Redpoll and Lesser Redpoll will be lumped back together as one species beginning in 1st January 2018 after the rather dodgy split into two species made in the year 2000.  I hope someone remembers to tell the birds before 1st January so that they can prepare for spring 2018, safe in the knowledge that it’s OK to begin breeding with the “other” species again. 

Are Redpolls Just One Species? March 2015.

"Mason and Taylor looked beyond the plumage into strands of the birds’ DNA in the most extensive look ever at the redpoll genome. Whereas previous genetic analyses of redpolls looked at just 11 regions of the genome (at most), Mason and Taylor examined 235,000 regions. (That impressive number is a testament to the exponential advances in DNA-sequencing technology, but the researchers are quick to note it’s still less than 1% of the total genome.)

In all, the duo compared DNA from 77 redpolls, including specimens from museums around the world, from the Museum of Vertebrates at Cornell University to the Natural History Museum of Geneva in Switzerland. They found no DNA variation that distinguishes Hoary Redpolls from Common Redpolls. Furthermore, another redpoll species found in Europe—the Lesser Redpoll—also had extremely similar DNA sequences. This extreme similarity among all the redpolls stands in marked contrast to studies of other groups of birds—such as Black-capped and Carolina Chickadees—which show differences at many regions of the genome.

In nature, one of the key differentiators among distinct species is assortative mating, that is, members of a group breeding with each other more often than they breed with members of another group. According to Mason, when it comes to Hoary, Common, and Lesser Redpolls, “There are no clear-cut genetic differences, what we would expect to see if assortative mating had been occurring for a long time.”

"The physical differences among redpolls are associated with patterns in their RNA, not their DNA. In other words, the variation in plumage and size is probably not a matter of genetic variation, but of genetic expression. It’s like how two humans might have the same gene for brown hair, but one person’s might be lighter than the other’s—that gene is being expressed differently.”

Ribonucleic acid (RNA) is a polymeric molecule essential in various biological roles in coding, decoding, regulation, and expression of genes.

There’s a useful set of photographs of Lesser and Common Redpoll here.

On the way home via Garstang and the mosslands I saw my first Swallows of the year, a pair on wires close to farm buildings. Also, 3 different Kestrels and a pair of displaying Buzzards, one of them visiting last year’s nest.

Linking this post to Anni's Birding Blog.

The Last Post?

Here’s wishing Seasonal Greetings to readers old and new of Another Bird Blog. The blog is taking a few well-earned days off to join in the festivities before returning soon. In the meantime there are a few highlights and favourites from the year gone by with words and photographs by way of illustration. 

In January 2015 we left the grey skies of England and escaped south for a few weeks to the warmth of Lanzarote, Spain. One thousand eight hundred miles from home on the island of wide blue skies the weather was spring-like with many birds engaged in the throes of breeding. 

 Berthelot's Pipit, Lanzarote - January 2015

The Desert Grey Shrike is very common on Lanzarote. It is also very vocal and fearless, as proven when I watched one attack and chase a feral cat from an area where both of the adult shrikes fed youngsters out of the nest. 

Desert Grey Shrike

The centre of a thorny bush in the desert like landscape makes for a secure nesting site; this female had yet to lay eggs but was pretty insistent on staying put just yards from the car window. 

Desert Grey Shrike

Lanzarote - January 2015

During February and March Andy and I began to catch both Lesser Redpolls and Siskins at the ringing site near Oakenclough, where to their credit United Utilities invested a large amount of cash in improving the site by removing rhododendron and then replanting. The redpoll passage was more noticeable than the number of Siskins, but by early April the less than spectacular movement of both was virtually over. 

Siskin

Lesser Redpoll

Replanting at Oakenclough

March and April saw the usual spring arrival of Wheatears, coupled in March with a very noticeable arrival of Stonechats whereby to see at least half-a-dozen Stonechats lined up along a barbed wire fence is fairly unusual. Meanwhile the cool, windy spring restricted opportunities for catching Wheatears with a measly three my sum total for the year. 

Stonechat

Wheatear

The wet and cool spring didn’t help Skylarks much. At Pilling two out of four Skylark nests failed at the egg stage when heavy rain washed out the nests, a third proved inconclusive, with only the fourth nest being successful at “ready for fledging” stage.

Skylarks

Skylark

“Travel broadens the mind” goes the well-worn phrase so the month of May found Sue and I widening our horizons by spending a couple of weeks in Menorca. When we come back to Earth next time we both want to be landed on this beautiful island and sit in the plaça drinking coffee all day - in between birding (and shopping!) of course. 

Alaior - Menorca 2015

Audouin's Gull

Egyptian Vulture

Back home during June and July around the local patch were a few unexpected Lapwing chicks. Rather perversely the wet spring for farmers and birders proved to be something of a blessing to the beautiful bird which likes wet meadows but struggles to survive the modern world of intensive farming. 

Lapwing - 2015

Lapwing - 2015

During late May, June and July just four timed visits to a local Sand Martin colony produced reasonable early season catches without proof of a good breeding season in the way of many youngsters. We suspect the cool and wet year played havoc with the martins just as it did with many other species during 2015. 

Sand Martin

It might seems strange to mention the common Bullfinch as a highlight but the single bird I caught at Oakenclough on the 28th August was the first I’d handled in almost thirty years. Yes, the Bullfinch is that scarce in this part of Lancashire. 

Tree Pipit was top of the pops at Oakenclough on 16th August when during a quiet ringing session four of the striking pipits found their way to the mist nets. Meanwhile the other fifteen birds of the day divided between a few each of Willow Warblers, Lesser Redpolls, Goldcrests and titmice. 

Tree Pipit

Bullfinch

September saw Sue and me adventuring in Skiathos, Greece, yet another beautiful sunny island. There’s a definite island theme going on here. 

 Skiathos - 2015

Skiathos isn’t a famed birding spot, thank goodness. But it may well be the best place on Earth to watch Eleonora’s Falcons in action. On other days I managed to find a good mix of species during and after a particularly violent and historic thunderstorm which wrecked the neighbouring island of Skopelos. Who says it only rains in Britain? 

Yellow Wagtail

 Eleonora's Falcon - Skiathos 2015

October proved a fine autumn month for birding and ringing before the downhill slide which brought major floods to North-West England. By the end of October our ringing sessions at Oakenclough had provided 60 Redwings, a handful of Fieldfares, continued redpolls and even a couple of bonus Sparrowhawks to enliven unwary fingers. 

Sparrowhawk

Redwing

There’s not much to say about November and December other than I wish it would stop raining and blowing a Hooley. We’ve managed three ringing sessions while the birding has been dire. 

BBC Weather Forecast, NW England - 24th December 2015

Roll on 2016 for longer days, brighter weather, birding and blogging. And SUNSHINE.

Linking today with Eileen's Saturday.