A Short Saturday

June is a quiet month for both birding and ringing. Many birders hang up their bins for a month and take a well-earned respite from the 'ping-ping' of WhatsApp messages. Ringers carry on through the quiet days knowing that although catches may be small, the data they collect is vital, more so if they have nest boxes to process. 

June is the period when young and recently fledged birds begin to discover their surroundings and the local area, learning it well enough so as to return to the same location next year. It’s a little like human infants that once having learnt how to crawl on all fours then begin to explore the small world around them in ever expanding circles. While human young take months and years to learn the ropes and to gain their independence, most young birds have just weeks before they head off alone to far  flung places. 

With such thoughts in mind I set off to meet Andy at Oakenclough for a bright and sunny start. Unless we hit a freakish patch we knew the morning would be quiet, and with luck, our catch into double figures. 

So it proved with just 13 caught - 3 Blackcap, 2 Willow Warbler, 2 Wren, 2 Great Tit, 1 Blue Tit, 1 Robin, 1 Goldcrest, 1 Dunnock . Ten of the thirteen were young birds of the year. The three adults caught were those recently breeding on site - a male Willow Warbler first caught here on 22 April 2020 and two new male Blackcaps. 

Blackcap - adult male 

Willow Warbler - juvenile

Young Goldcrests show zero colouration on the crown, unlike adults that are sexed according to the colour of their crown feathers. 

Goldcrest - juvenile 

The morning’s hatch of insects brought in p to eight Swifts and several Swallows aerial feeding around us. Otherwise birding was unspectacular apart from a Cuckoo that called as it patrolled the edge of a nearby plantation. 

And now for Sunday afternoon - Father’s Day. We await the arrival of kidsand grandkids bearing gifts that might include a bottle or two. That’s Sunday evening sorted. 

Back soon with more birding and ringing from Another Bird Blog. Maybe next week we’ll get the much promised heatwave? 

Garden Time

Monday 25 May 2020 produced a tiny catch of birds at Oakenclough during our first visit of the spring. We planned a return for this week as we knew from experience there would be more Willow Warblers and other species along pretty soon. 

Andy and I met up at 0630 to zero wind, full cloud cover and a promise of no rain. We ringed just 13 birds - 9 Willow Warbler, 2 Great Tit, 1 Blackcap and 1 Garden Warbler. 

The highlight of the morning was the last named species - yes, a Garden Warbler Sylvia borin. 

“So what’s the big deal?” I hear the cry from afar. 

Garden Warbler

The big deal is that seven or eight pairs of Garden Warblers bred in the plantation here every year until the mid-2000s when they were gradually pushed out by invasive rhododendron that overwhelmed the entire area. Other species forced out at that time included the Common Bird Ringer, Yellowhammer, Bullfinch, Tree Pipit and Lesser Redpoll. There was also a drastic reduction in the number of breeding Willow Warblers from 15/20 pairs down to single figures. 

And then in 2012/2013 the owners United Utilities (UU) invested money in trying to eliminate the rhododendron and followed it up with a replanting scheme of native species. It was a thankless and massive task that took many hours of manual labour working in difficult terrain. Even now, the evil rhododendron is attempting a come-back and will surely succeed unless UU begin an ongoing and periodic regime of destruction. 

The significance of today’s Garden Warbler is that our bird was a female in prime breeding condition; a full brood patch at this the appropriate time of year rather than the species' usual appearance as an uncommon spring or autumn migrant. Fingers crossed that we catch the corresponding male, the youngsters and that the Garden Warbler has returned. 

Garden Warbler 

Over the years 1996 to 2019 our tiny group of ringers have ringed over 370 nestling Willow Warblers at Oakenclough. During that time finding, recording and ringing the nestlings became a project in itself where no mist nets were employed and no adults caught. 

Today we chanced upon a further nest that held 6 young Willow Warblers of an ideal size for ringing. Therefore our nine Willow Warblers consisted of 3 new adults and 6 nestlings. 

Willow Warbler nest 

Willow Warbler

The single Blackcap was a new adult male, the two Great Tits recently fledged youngsters. 

Blackcap

Great Tit

Other birds today - 2 Great-spotted Woodpecker, 1 Cuckoo, 1 Sparrowhawk, 1 Grey Wagtail. 15 Greylag, 2 Oystercatcher, 2 Swallow, 4 Chaffinch, 2 Goldfinch.

Linking this post to Anni's Birding Blog and Eileen's Views of Nature.

Catching Up

We have now lost two months of ringing with a corresponding loss of two months of data collection. Bird ringers confined to barracks have not caught other ringers’ birds and ringers have been unable to catch birds previously ringed by others. 

Many ringed birds are recovered via Joe Public when they report their finding of a ringed bird via the address inscribed on each ring, but with so many people stuck at home it was inevitable that incoming information would be much less. 

Bird Rings - Size E and Size F 

Although ringing is no longer all about the where and when of bird movements, it is always interesting and thought provoking to receive a BTO notification about a bird ringed weeks, months or years before. Even better perhaps is to catch a bird wearing an unfamiliar ring number with a foreign ring, the ultimate prize for many bird ringers. 

The emphasis of bird ringing is the generation of information on the survival, productivity and movements of birds, helping us to understand why populations are changing. Ringing data make a major contribution to the study of population changes and to the understanding of species declines. 

Bird populations are determined by the number of fledglings raised and the survival of both juveniles and adults. 

On Monday, and after a weekend of gale force winds, we had a chance to remedy the recent data loss with an overdue visit to Oakenclough. There was a promise of a 5 mph and early morning sunshine for the meet with Andy at 0600. 

At this time of year we don’t expect huge catches because migration is over and birds have settled down in one spot to breed. It will be mid to late June before the catch rate improves. Therefore our catch of just eight birds came as no surprise and accompanied with the ringer’s refrain – “Well if you don’t go, you don’t know”. 

Our eight birds generated a little new data by way of  4 Blackcap (2 male, 2 female ) 2 male Willow Warbler, 1 juvenile Robin and 1 juvenile Wren. 

Blackcap 

Blackcap 

Blackcap 

Recapture Willow Warbler KCE788, an adult male was ringed here at Oakenclough on 24th July 2019 when it was undertaking its main moult period prior to heading back to Africa. It was in breeding condition again today where it was caught and then released in exactly the same area. 

Willow Warbler 

Robin

This was a quiet morning and other than the birds caught there was little to see; except for 2 Swallow, 4 Willow Warbler, 4 Chaffinch, 2 Goldfinch, 40 Greylag , 2 Oystercatcher and 2 Lapwing. 

Spotted Saturday

If August is predictable as warblers and Swallows journey south to Africa, September is less so. 

Just this week saw the first returning Pink-footed Geese when a gaggle of around 200 flew over Pilling and then to the salt marsh beyond; the geese seem to arrive earlier each year. And then the weather turned more autumnal with strong winds and high tides that blew petrels, skuas, manxies, fulmars and gulls closer to shore. 

Manx Shearwater 

Pink-footed Goose

On Saturday came a break in the squalls when a ridge of high pressure built from the North West. With it came a chance of ringing at Oakenclough but with less certainty about what we might catch given the arrival of September. Would it be a morning of finches, warblers, pipits and wagtails, or perhaps a mix with a few of each? 

It was 0600 when Andy and I met at the ringing station to a cold easterly and 9 degrees C. The cold start gave a slow opening to the catch but as the morning warmed more birds arrived, especially the diurnal migrant, Meadow Pipit. Missing from our catch today were Willow Warblers, a regular feature here during June, July and August, but replaced now by Goldcrests, a September species for sure. 

The really noticeable migrant today was Meadow Pipit with a count of 100+ in steady and small arrivals from the north, a number reflected in our catch of 36 birds and 8 species - 14 Meadow Pipit, 6 Goldcrest, 5 Blackcap, 3 Chiffchaff, 2 Spotted Flycatcher, 2 Goldfinch, 2 Robin, 1 Blue Tit, 1 Chaffinch. 

The surprise bird today was Spotted Flycatcher, not one but two individuals, both first years, but caught three hours apart. It’s a species that we catch quite rarely although we suspect that some bred quite close to here this year. 

Spotted Flycatcher 

The Chiffchaff wing shows a shape and formula that is quite different to its close relative the Willow Warbler i.e. the short 2nd primary feather, “rounded” wing shape (3, 4 and 5 of very similar length), and emargination to the 6th primary feather. 

Chiffchaff 

Chiffchaff

Below is the wing of an adult Meadow Pipit that displays uniform olive tones, the squared olive/buff tips to the median coverts without “teeth”, well-defined margins of the greater coverts, plus tertials all of the same age. 

Ageing Meadow Pipits can be more difficult when birds born early in the season display many characteristics of adults, with sometimes just a few pale buff juvenile feathers left. The fourteen Meadow Pipits today split 11/3 in favour of first years but similarly sized catches might easily contain no adults, especially so as autumn progresses. 

Meadow Pipit 

Meadow Pipit 

All of our Blackcaps were first year birds, four female, one male, and one likely male with hints of a black cap. 

Blackcap  

Other birds today - 2 Jay, 15+ Swallow, 2 Great-spotted Woodpecker, 1 Nuthatch.

Linking this post to Anni's Saturday Birding.

A Better Day With No Buzzards.

After almost two weeks of unseasonable wind and rain there was just a chance the weather might ease slightly and allow a spot of ringing.  The dark of Tuesday night and into early Wednesday saw more pouring rain and then en route to Oakenclough the car splashed through fresh pools of water to confirm that August 2019 is the wettest ever recorded; and another week to go! 

I met up with Andy to 100% murk and to cool, threatening cloud but we reassured ourselves that the pourcast for the morning was 5/10 mph wind plus the chance of a fleeting shower only. 

And so it was but the overnight downpours had done us no favours with a poor catch of just 14 birds and minimal obvious migration: 5 Willow Warbler, 3 Blue Tit, 2 Goldcrest and one each of Chiffchaff, Blackcap, Great Tit and Chaffinch. 

Today’s five new Willow Warblers, all first year/juveniles, increased our total here to 74 for the year, a much higher figure than normal and almost certainly due to a good productivity during the settled weather of June and July. 

Blackcap 

Willow Warbler 

Chiffchaff 

There was little in the way of other birds, the cool, damp start had done for that. We saw a small movement of Swallows heading south in parties of 5-10, in total about 60 individuals. Otherwise, a flock of 20/30 Goldfinch, 2 or more great-spotted Woodpeckers and a single Nuthatch. 

On the way home via Pilling and Rawcliffe Moss there was a flock of 80/90 Swallows on overhead wires, the most I have seen all year. This is a sure sign that Swallows are preparing to migrate. They flew about restlessly, and gathered on telegraph wires. 

Most Swallows leave the UK during September, with early broods of youngsters being the first to go. A few stragglers may hang around into October.  

Swallows 

The return journey to Africa takes about six weeks. Swallows from different parts of Europe fly to different destinations. Our UK Swallows end up in the very south. They travel down through western France and eastern Spain into Morocco, before crossing the Sahara Desert and the Congo rain forest – finally reaching South Africa and Namibia. 

Swallows migrate during daylight, flying quite low and covering about 320 km (200 miles) each day. At night they roost in huge flocks in reed-beds at traditional stopover spots. Since Swallows feed entirely on flying insects, they don’t need to fatten up before leaving, but can snap up their food along the way. Nonetheless, many die of starvation. If they survive, they can live for up to eleven or twelve years but such an age is very exceptional with most surviving less than four years. 

It is very sad that this much-loved species, and like so many others, is in such a downward population spiral. 

Swallow 

As a further aside, I’m not seeing many Buzzards this year. Normally by late summer and on the regular 15 mile journey from Oakenclough to home at Stalmine via Garstang, Nateby, Skitham, Rawcliffe and Pilling, stopping now and again, there would be 10-15 in the air. This morning - none. 

This lack of Common Buzzards has troubled me all year. 

Buzzard 

Unfortunately, in this part of quiet countryside where the rearing of non-native game birds followed by the winter shooting of the same in the name of “sport” is very widespread, the Common Buzzard, both innocent and occasionally guilty, is now very much an Avian non grata. 

I’m not accusing anyone, just to note that all of a sudden, Buzzards have become very scarce. Bird watchers - be on the alert, and if necessary report to the authorities any suspicions you have.

Linking today to Eileen's Blogspot.

Annual Bullfinch Day

The forecast was for a better morning of almost zero wind coupled with bouts of sunshine. Another 0600 start up at Oakenclough where Andy was already out of his car and ready to go.

A check of the DemOn database revealed we started the new month with 137 captures during July including 35 Willow Warblers and 24 Blackcaps, more than we expect and perhaps a sign of a good breeding season.

There were fewer birds this morning with a lack of Blackcaps but a continuation of the Willow Warbler theme with 22 new birds and zero recaptures. Totals - 10 Willow Warbler, 2 Coal Tit, 2 Wren, 2 Blue Tit and one each of Bullfinch, Goldcrest, Chaffinch, Blackcap, Chiffchaff and Great-spotted Woodpecker.

Today represents our likely annual Bullfinch catch. We see just one or two Bullfinch a year at this site and we are unable to say from where they originate. The species previously bred here in the late nineties and almost certainly still breeds fairly locally.

Despite the rather striking appearance of the male Bullfinch the species as a whole is rather discreet, unobtrusive and even secretive, a bird that is easily overlooked by anyone unfamiliar with its quiet song and calls.

  

Bullfinch 

As with the young Bullfinch, at this time of year young birds that recently left the nest can look rather fine in their fresh plumage. Conversely, adult birds can look rather scruffy after weeks of intensive work and activity in bringing up a family. 

Compare the images below - a juvenile Willow Warbler born sometime in June and an adult Chiffchaff with severely worn flight feathers. 

Chiffchaff - worn adult - 1st August 

Chiffchaff - adult 

Willow Warbler - juvenile/first summer 

Between fledging and its migration south in the autumn the young Willow Warbler will undertake a partial moult of body contour feathers but not flight feathers. This moult is necessary to replace feathers not structurally strong enough to withstand normal wear and tear adequately, or more importantly, the stress and dangers likely to be imposed by the rigours of migration to Africa.

An adult Willow Warbler is exceptional as a species in that it has two complete moults per year, one in the breeding area soon after breeding, the other in the African winter quarters.  This difference in moult strategies of adults and juveniles, and hence the appearance of autumn Willow Warblers, is often the cause of confusion by birdwatchers who claim they can age Willow Warblers in the field. 

The Chiffchaff must soon begin a complete moult and then replacement of all of its feathers in order to be fit enough to return to Africa before winter sets in. A Chiffchaff will take about 6-7 weeks to complete the staged replacement of its feathers.

The Great-spotted Woodpecker was also a juvenile - a noisy and demonstrative individual that drew blood with a series of hammer blows to my thumb.

Great-spotted Woodpecker 

And just the one Blackcap today, another juvenile and a few weeks too early to decide male or female.  

Blackcap

Log in soon. There are more birds and photos to see with Another Bird Blog.

Linking to Anni's Blog and Eileen's Saturday Blog.

Willys Win

The early hours had seen bouts of thunder, lightning and torrential rain as Andy and I met up at 0600 to very overcast conditions that threatened more rain. After last week’s 40 birds we hoped for a repeat performance at Oakenclough. 

After The Deluge

The rain held off, the sun came out, and by 1130 we’d caught another 47 new birds, including a Blackcap ringed elsewhere. 

Today’s birds included a nice haul of migratory Willow Warblers and Blackcaps - 16 Willow Warbler, 6 Blackcap, 6 Great Tit, 5 Blue Tit, 4 Chaffinch, 2 Chiffchaff, 2 Robin, 2 Goldcrest, 1 Goldfinch, 1 Treecreeper, 1 Garden Warbler and 1 Spotted Flycatcher. 

Oakenclough often springs a surprise. Today’s came when we caught a Spotted Flycatcher. Spotted  Flycatchers are not rare; in fact they breed here at Oakenclough in woodland some 250 metres from our ringing site where the nestlings are ringed but we rarely if ever see Spotted Flycatchers in spring or summer away from that summer habitat. 

The Spotted Flycatcher is well known as one of the species that makes minimal stops to and from their African wintering grounds and the UK. Today’s bird was an obvious, very spotty and still fluffy juvenile, not long fledged from a nest but not one from our nest boxes as it had no ring. It may have come from a natural site close-by. 

Spotted Flycatcher 

Of the sixteen Willow Warblers, only three were adult, as one might expect from what appears to be a productive summer. All three adults were in the process of completing their main summer moult. 

Willow Warbler - juvenile/first summer 

Willow Warbler - adult 

Of today’s six Blackcaps the only adult we found was a female, ACE2152, the ring from elsewhere on a previous occasion. We’ll find out the details in a week or so. 

 Blackcap

Blackcap - ACE2152 - adult female

Goldcrest - adult male 

Treecreeper - Juvenile/first summer 

It’s another 6am start tomorrow. It will be interesting to see how many of today’s birds we catch. I suspect none.

Surprise Surprise!

On Tuesday I met Andy at 0600 for our first ringing session at Oakenclough since early spring, an unproductive period for ringing when the weather was predominately cool and wet.  We don’t normally head up to the hills until a little later when real autumn migration begins rather than the summer time of post-breeding dispersal.  The post-breeding species list can be rather short here at 800 metres above sea-level but increases substantially when finches and thrushes from further north begin to appear. 

But with recent good weather and signs of a productive breeding season we decided to give it a go. This proved a good decision as the morning became very interesting with a catch of 40 new birds. We had zero recaptures from previous visits. 

When we arrived all seemed quiet with little no bird song or even contact calls but as both the sun rose and the temperature gauge climbed we began to catch with a morning dominated by warblers. 

We finished soon after 1100 with a catch of 40 birds of 12 species: 11 Blackcap, 9 Willow Warbler, 2 Garden Warbler, 1 Chiffchaff, 1 Goldcrest, 5 Chaffinch, 2 Robin, 2 Blue Tit, 2 Great Tit, 1 Treecreeper, 3 Wren and 1 Tawny Owl. 

Willow Warbler 

Blackcap

Robin 

Goldcrest 

The biggest surprise of the morning came with a Tawny Owl languishing in the bottom panel of the mist net at 10 0’clock, a time when all Tawny Owls should be tucked away and fast asleep. Upon examination and measuring we ascertained that the owl was a juvenile born this year. A wing length of 265mm and a weight of 335 grams determined a male; a female is bigger than the corresponding male. 

 Tawny Owl

Tawny Owl 

We no longer catch many Garden Warblers so it was good to catch two. There was one adult male Garden Warbler and a juvenile, which is far from proof of breeding on site, but possibly so. 

Garden Warbler 

Garden Warbler

Garden Warblers bred here at Okenclough on an annual basis until the late 1990s when invasive rhododendron overran the landscape of bramble, bracken, bilberry and hawthorn. Slowly but relentlessly the site became unsuitable for a number of species like Bullfinch, Yellowhammer, Tree Pipit and Garden Warbler, and they were pushed out by the all-conquering intruder. The rhododendron beat us too and we were forced to abandon the site in 1997.   

Then in 2012/13 the land owners North West Water began a programme of rhododendron clearance and replanting of native species whereby, and after an absence of many years, we returned to the site in 2014. 

Since then we have captured almost 3900 birds including two Garden Warblers in 2018 and now two more in 2019.  It would be nice to think that Garden Warblers have returned for good as the site is now suitable for them. Time will tell.

Linking today to Anni's Blog and Eileen's Saturday Blog.