Double Dilemma

Late on Saturday Will and I had the same dilemma. On Sunday morning should we burn rubber up to Glasson Dock for sight of a Lesser Yellowlegs, or burn calories on Rawcliffe Moss trudging around the mist nets yet again for further Chaffinch and Meadow Pipits? After all, before any Sunday session we had caught 225 Chaffinch and 182 Meadow Pipits on site this year, so why bother with more?

Lesser Yellowlegs by USFWS

We both agreed, a “lesserlegs” is much like a Redshank and as we have seen them both, we really ought to continue with our recent ringing tasks. So we made another 0630 start and then set the usual nets.

Today's was another tiring effort but an excellent catch of 66 birds of 7 species, 64 new and 2 recaptures. New birds: 25 Chaffinch, 20 Meadow Pipit, 9 Reed Bunting, 4 Goldfinch, 3 Chiffchaff, 2 Blackbird and 1 Blue Tit. Recaptures were 2 Chaffinch, one first ringed in February 2009, and a more recent bird ringed in August. The 3 new Chiffchaffs pushed our total for here to 22 birds for the year, high by local standards.

Chiffchaff
Chaffinch
Chaffinch
Goldfinch

This morning’s visible migration proved a very stop-start affair with an early push of both Meadow Pipits and Chaffinches followed by periods of quiet and little obvious movement of birds. The slow periods coincided with belts of cloud to the south that moved slowly north and east, and at 0915 a front of drizzle that threatened to put paid to the morning. Luckily the sprinkle of water did little in the way of even wetting the nets, just the ringing gear on Will’s truck. When we packed in at 1130 we had counted circa 250 Meadow Pipits heading south but a higher count of finches, with 350+ Chaffinch, c40 Lesser Redpoll, 4 Siskin and 3 Greenfinch.

Weighing a “mipit”
Meadow Pipit

The movement of Reed Buntings was very marked this morning, so to our catch of 9 we added another 25+ birds which moved south with pipits and finches. Other “vissers”, 2 Grey Wagtail, 5 Alba wagtails, 1 Mistle Thrush, 40+ Skylark, 40+ Swallow.

Local birds today: 2 Buzzard, 1 Raven, 2 Tawny Owl calling at dawn, 1 Sparrowhawk, 1 Kestrel, 5 Jay, 1 Snipe, 30 House Martin, 20 Swallow.

Another Good One

When we looked at last night’s charts both Will and I thought that Friday might offer a chance of another ringing session so as usual we met up on Rawcliffe Moss for 0630. The starts get later now, with 0630 almost a lie-in, but once the clocks go back so do the alarm settings.

Another rewarding morning saw us catch 59 birds of just 7 species, but 57 new and 2 recaptures. We continued the Chaffinch and Meadow Pipit theme of the last few weeks with the majority of our tally made up of those two species, but also found more Reed Buntings in among the arriving mipits. New birds, 25 Meadow Pipits, 23 Chaffinch, 5 Reed Bunting, and 1 each of Lesser Redpoll, Chiffchaff, Goldfinch and Great Tit. The recaptures were a Goldfinch and a Great Tit, both of them ringed quite recently.

Reed Bunting
Reed Bunting
Chaffinch

Although there was strong movement of Chaffinches today, particularly after first light, we didn’t see or hear the chattering of overhead Lesser Redpolls with the single bird caught the only one on the field sheet.

Lesser Redpoll

Following our recent mipit wing length of 90mm, a blog reader asked about wing length variation of Meadow Pipits, so I looked again in Birds of the Western Palearctic. From various sources the book gives wing length to be anything between 73mm for the smallest females and up to 86mm for males, with probably 80/81 mm being of indeterminate sex. In a typical autumn we catch a good number of birds above 85mm and I would guess that these individuals are of Icelandic origin. Click on the picture to see large text.

Meadow Pipit
Birds of the Western Palearctic – Meadow Pipit

Whilst steady, our morning wasn’t so busy that we couldn’t take note of the visible migration taking place, even in the 10/12mph south-westerly. From very soon after first light there was a strong movement of Chaffinches which although tailing off fairly quickly still left us with an estimate of up to 300 birds in the five hours on site. Meadow Pipits were rather less obvious, reflected in our catch of 25 birds, but we estimated them at 200 in the five hours. Our Reed Bunting “vis mig” count was 10 + birds in addition to the 5 caught. As mentioned above, no other finches overhead apart from 30+ Linnets and 100+ Goldfinch, but we are unable to separate out any migrants from the local birds that feed on the farm and roost nearby.

Linnet

During the morning we noted a fairly small number of Swallows and House Martins, an assembly which from about 1030am almost imperceptibly built up to a very large feeding flock of 400+ birds, 95% of them Swallows: we left about 1130 but the hirundines remained in the area. The first hour after dawn also saw a number of alba wagtails overhead, upwards of 20 birds through in the first two hours, then a later smattering of single birds. Other birds on the move south, a party of 8 Mistle Thrush, a gang of 60 + Skylark with additional singles throughout, 5 Corn Bunting, 1 Yellowhammer and 1 Golden Plover.

Raptors today: 3 Buzzard, 1 Kestrel, 1 Tawny Owl and 1 Barn Owl which in the half-light of dawn floated silently between Will and myself and over our half erected mist net.

So, heaps of birds seen and bags of birds caught. What a great morning it was.

Not Again?

Thursday proved another windy morning for Another Bird Blog, so time to brave the elements and then perhaps find a sheltered spot, watch and wait, and hope a bird or two turns up. By midday there wasn’t a lot in the old notebook, but I finally got a recognisable shot of the Lane Ends/Fluke Hall distant Marsh Harrier before it departs the scene.

A fleeting trip to Knott End proved, dare I say, as unexciting as the old village itself, with just several Redshank and 2 Eider at the river with 10 alba wagtails flitting across the golf club fairway. Fluke Hall was more inspiring with 60+ Lapwing, 35 Linnets, 5 Greenfinch, 1 Little Egret and 6 Meadow Pipit on the shore, although the wood was eerily quiet with no sign of autumn Chaffinches yet.

Looking back inland from the sea wall I spotted 2 Buzzards circling, seeking early thermals, and then out on the marsh a gang of Carrion Crows squabbling with a Raven. The Raven took the hint and flew further out on the marsh. Without warning the Marsh Harrier of recent weeks reappeared from north of the wood, and as it does so often flew quickly to the outermost part of the salt marsh then dropped into the long grasses and out of sight. So, more fleeting, distant views but from the photographs it certainly looks like the same bird of recent weeks. That’s Heysham Power Station in the background, not as near as the telephoto lens makes it appear, 18 miles by road but a lot less for a migrant bird taking the shorter Morecambe Bay crossing north or south.

Marsh Harrier
Marsh Harrier

By this time the Buzzards had flown out almost as far as the harrier, around to Lane Ends and then back towards Fluke Hall, but all the time gaining height as the morning warmed up. A Peregrine showed up by now, doing the same circuit as the Buzzards, but a lot quicker. And then along came a Kestrel, sticking to searching the sea wall and the wildfowler’s pools where 10 or so late Swallows hawked around.

Buzzard
Little Egret

From the stile at Pilling Water I noted 7 Little Egrets, a calling, distant Greenshank somewhere beyond the 180+ Pink-footed Geese and 40 Greylag. There were 2 big Wheatears on the shore, not seeking insects amongst the usual rocks, but searching for more earthly stuff in the soft marsh grass, and overhead a small but steady trickle of 30 or more Skylarks. I counted the Skylarks heading over as I crouched on the shore where about 20 grounded Meadow Pipits had gathered, so I spent a short while getting more pictures, all the time hoping I’d get to ring a few more of the little beauties soon.

Meadow Pipit
Meadow Pipit
Meadow Pipit

Early Doors And Late Gropper

We spotted a break in the wet weather for this morning so Will and I met up at 0600 hours for another crack at Out Rawcliffe. Maybe it was too much to hope for another big push of finches and Meadow Pipits and another “mega” catch as no two days are ever alike, but we didn’t do too badly. Our interesting and absorbing five hour session reached a total of 39 birds, 38 new and 1 recaptured Dunnock.

The 38 new birds were 19 Chaffinch, 9 Meadow Pipits, 4 Reed Bunting and 1 each of Dunnock, Blue Tit, Robin, Great Tit, Lesser Redpoll and Grasshopper Warbler. By 20th September it’s quite late to find skulking Grasshopper Warblers up here in the north west of the UK, as in most years “groppers” are not seen beyond mid-August. For readers not familiar with Grasshopper Warbler the name refers to their reeling, insect-like song and not any part of the species’ appearance.

Grasshopper Warbler
Grasshopper Warbler
Meadow Pipit

Unlike the past week the visible migration of most species during the 5 hours was down on the past week’s high numbers but still evident from north to south: Meadow Pipit 120, Chaffinch up to 170, Lesser Redpoll 40+, Siskin 10+. Our catch of 4 Reed Buntings indicates the beginning of their movement south, always apparent here during September but more so in October. The sight of two early morning Song Thrushes departing the planation and then heading strongly south may also herald the beginning of the thrush season.

Reed Bunting
Lesser Redpoll

More in evidence today were Skylarks, with upwards of 60 birds flying from east to west, particularly noticeable as a bank of cloud spread to the south about mid-morning. The fields on the moss are pretty wet by now, a fact which led to us seeing about 45 Snipe this morning as they were disturbed off their puddles and then flew off and around in various directions, at one point pushed off a wet patch by a wandering Roe Deer.

Snipe
Roe Deer

Other birds and “locals” seen this morning included 2 Sparrowhawk, 1 Peregrine, 2 Kestrel, 5 Buzzard, 1 Tawny Owl, 2 Golden Plover, 60+ Goldfinch and 60+ Linnet.

At dawn we had seen a Wheatear perched on one of the hay bales after which it disappeared from view. It was only as we drove off site hours later that I saw it again some fifty yards away from our ringing station.

Wheatear

Reprise

Saturday was spent watching for breaks in the rain, living in hope the forecast might change for the better; it did, so Will and I found ourselves at Out Rawcliffe again this morning, and hoping for a repeat of Thursday’s catch of 122 birds.

But we didn’t quite hit the same heights with today’s catch of 94 birds of 12 species, 93 new and a single recapture of a Chaffinch from recent weeks. New birds today, 48 Chaffinch, 29 Meadow Pipit, 3 Chiffchaff, 3 Blue Tit, 2 Goldcrest, 2 Coal Tit and singles of Great Tit, Goldfinch, Robin, Lesser Redpoll, Dunnock and Blackcap.

Chiffchaff
Goldcrest
Chaffinch – adult male
Lesser Redpoll

The throughput of Chaffinches from north to south was very marked today, with larger groups than of late and sometimes up to 10 or 12 individuals, which led to an overall count for the 6+ hour session of approximately 600 birds. The Meadow Pipit passage was slightly less than last Thursday with today’s count being 300+ birds, but again a mid-morning peak. There is a marked sexual difference in Meadow Pipits but one of today’s males was quite enormous, with a wing measurement of 90mm, significantly above the quoted range in Birds of the Western Palearctic (BWP). This bird just has to be of Icelandic origin.

We are now seamlessly into the swing of ageing Meadow Pipits, a process which is easier than determining their age in spring. However to accurately age any species it is essential to have a thorough knowledge of the moult and wear of those species’ feather tracts and a grasp of the general principles of ageing. If it is a species we don’t see in the hand very often a copy of “Svensson” or “Moult in Birds” are always to hand, books which give invaluable guidance. Both of the above mentioned books are actually invaluable to bird watchers who might want to spend time ageing species in the field through a telescope, but to bear in mind that some of the feather tracts or other features described may be invisible on a closed wing or tail.

”Svensson”
Moult in Birds

In the case of Meadow Pipits we have many years of experience with them to recognise the features of an adult’s complete post-breeding moult, or the partial moult of a juvenile bird where it replaces some only of its feathers. We also take into account the fact that in the north of their wide range an adult Meadow Pipit moult may take several days less than a typical UK Meadow Pipit, and in addition allow for the fact that Meadow Pipits may have two or more broods of young; the young birds could have been born anytime between the months of April/May and August, and depending upon their places of origin and date of birth, apparently identical juveniles may actually show quite differing amounts of feather wear and/or replacement.

The photographs below are from today, a recently fully moulted adult Meadow Pipit with the same age of feathers throughout the wing structure, and below that an image of a juvenile wing with a mix of recently grown adult type feathers and its retained juvenile “summer” feathers.

Meadow Pipit - adult
Meadow Pipit - juvenile

Once again our busy ringing session meant missing some of the visible migration, but we noted 37 Snipe, 20+ Skylark, 35+ Siskin in 3 separate groups, 20+ Lesser Redpoll, 3 Sparrowhawk, 180 + Swallows and 6 House Martin.

“Locals” included 2 more Sparrowhawks, 9 Buzzard, 2 Tawny Owl, 40+ Goldfinch, 20+ Linnet, 2 Kestrel, 3 Jay and 2 Great-spotted Woodpecker

Harried Again!

After the moss marathon yesterday it was almost a relief to return to normal today with breezy, cloudy south-easterly weather that dictated a Pilling walk rather than more ringing. It wasn’t much of a morning for the camera either so apologies in advance for mainly archive pictures today, but there are a few interesting sightings I hope.

Lane Ends car park was full of sportsmen looking longingly at approximately 350 Pink-footed Geese, newly arrived from Iceland. Already the pinkies are wary; as well they might be, but with experienced birds and Pilling regulars amongst the flocks they will hopefully have some success in staying away from the guns.

Pink-footed Goose

Two noisy Jays reminded me that it is September, the time of year when the coloured crows take up residence here in search of acorns from the small number of oak trees. On the pools I found the 2 Little Grebe again as a number of Swallows hawked around the water and grassy spots, but later in the morning I was to witness a sizeable movement of Swallows heading south-east.

Setting off to Pilling Water along the embankment I clocked 4 Little Egret, 55 Curlew, 2 grounded Meadow Pipits, 40 Goldfinch, 14 Linnet and 2 Skylark. It’s best to tread warily around the stile, not to peer over the fence too obviously because there may be a few bits and pieces on the pool if first there. I knew I was the first when 2 Green Sandpipers exploded noisily from the water’s edge, despite my careful approach. They flew off to the quiet of the wildfowler’s pools, with c 20 Teal only today after the recent increase in water levels. Below the sea wall were 2 White/Pied Wagtail with behind me somewhere the contact call of Reed Bunting, and then another, but I couldn’t see the birds and they may have been overflying.

Linnet

Near the Wheatear rocks I sat for a while on the damp grass but sadly there were no Wheatears to look at today, nor the Stoat.

Stoat
Stoat

The Peregrine stood out there on the marsh, in a direct line to Heysham Power Station, and easy to pick up again should I let my bins venture left or right. A Marsh Harrier came into view from the left, so far on the edge of the marsh that it was barely discernible with the naked eye when I lowered my bins. As the bird traveled east the views in slightly better light made me think it was the same bird from a week ago Friday 9th September, but I can’t be sure. When the harrier disappeared into the distance the Peregrine was still rooted to its same spot with nothing much to chase save for distant Curlew and Shelduck.

As the rain approached from the south I decided there was time for a quick look at Ridge Farm. It was here where Swallows were very visibly on the move, coming from the west and off the sands, then over the embankment and heading markedly into the south-easterly breeze. In an hour’s walk I counted more at least 130 Swallows doing exactly the same thing. There was nothing much else here except for a few Meadow Pipits, 18 Linnet, a single Siskin overhead, a handful of migrant Chaffinches “pink-pinking” from the hedgerow, and a Buzzard, a little inland and over towards Duck Lane, the way home.

Chaffinch

A Hundred Plus

Before this morning the last time Will and I managed a ringing session on Rawcliffe Moss was 4th September, the in-between time spent waiting for Irene and Katia to clear our shores. Today dawned cold but fine and bright and without the nagging, sometimes vicious wind of the previous ten days, so we hoped for lots of migrant birds previously held up by the bad weather.

The cold air gave us a fairly slow start which gathered momentum so quickly and successfully that by the end of the 6 hour session we had exceeded the magic one hundred by amassing a total of 122 birds of 12 species, 113 new and 9 recaptures, with the highpoint of the morning being the large number of two species in particular on the move south, Meadow Pipit and Chaffinch. New birds: 52 Meadow Pipit, 45 Chaffinch, 7 Goldfinch, and singles of Garden Warbler, Chiffchaff, Jay, Great-spotted Woodpecker, Sparrowhawk, Robin, Blue Tit, Great Tit and Coal Tit.

Our recaptures were 8 recently ringed Goldfinch, all returnees to the Niger feeders, and a Chiffchaff which has hung around the site whilst completing its adult moult.

Meadow Pipit - juvenile
Meadow Pipit- adult
Garden Warbler
Goldfinch

Whilst we caught both Chaffinches and Meadow Pipits steadily, the peak of catching Chaffinches proved to be between 9am and 10am. There was a noticeable spike in Meadow Pipits numbers between 10am and 11am, in both visual migration and in the numbers we caught which might suggest that the Meadow Pipits had travelled a greater distance or from a wider area than the Chaffinches. Here on the moss we find migrating Meadow Pipits to be more detectable than Chaffinches, and taking this into account the estimate of both species on the move south here this morning is approximately 400 Meadow Pipit and 500 Chaffinch. We noted other finches on the move this morning, mainly 40+ Siskin and 4 + Lesser Redpoll, with small numbers of locally feeding Linnet c30 and Goldfinch c100.

In their different ways a Jay, a Great-spotted Woodpecker or a Sparrowhawk are all capable of drawing a ringer’s blood.

Great-spotted Woodpecker
Great-spotted Woodpecker
Sparrowhawk – juvenile male
Sparrowhawk – juvenile male
Jay

Processing 120 plus birds limited our pure birding somewhat, but we also noted 6+ Reed Bunting, 1 Tree Pipit, 3 Snipe, 1 Yellow Wagtail, 2 Grey Wagtail, 2 Jay, 2 Sparrowhawk, 4 Buzzard and the return of 15 Pink-footed Goose.