Pipits are Top, Burger Is Bad

Expectations were high this morning. Monday afternoon, evening and overnight had been clear and warm, perfect conditions for migrant birds setting out on a long journey. Or so we hoped. I met up with Andy before 0600 to a clear sky and zero wind. We were joined today by Bryan. 

After a slow start birds began to appear with a decent amount of visible migration heading south in the shape and sounds of 45+ Swallow, 8 Sand Martin, 30+ Meadow Pipit, 20 Tree Pipit, 12 Pied Wagtail, 2 Grey Wagtail, 2 Spotted Flycatcher and uncounted but small numbers of Chaffinch.  

In the main we targeted pipits, wagtails and warblers and  finished at midday with a catch of 45 birds and a mix of 13 species. 

It was pipits that topped the charts today, not the common Meadow Pipit, instead the less abundant Tree Pipit at the peak of the species’ autumn migration timetable and following an apparently successful breeding season. In contrast to Tree Pipits whose migration will be over by September, the migration of Meadow Pipits is just beginning and will last into October. 

Totals - 11 Tree Pipit, 2 Meadow Pipit, 8 Willow Warbler, 4 Chaffinch, 3 Chiffchaff, 3 Goldcrest, 3 Wren, 3 Robin, 3 Blue Tit, 2 Great Tit, 1 Blackcap, 1 Bullfinch, 1 Lesser Redpoll. 

Tree Pipit 

Meadow Pipit 

Bullfinch 

Chiffchaff 

Chaffinch 

Bullfinch 

Goldcrest 

And now for news and a precautionary tale about crows that live in the city. 

Apparently, and according to a new study, researchers recently found that American Crows living in urban settings have higher blood cholesterol levels than their rural peers. The crows’ higher cholesterol levels came about after they picked up the eating habits of their human neighbours by eating discarded pizza slices and tossed-out cheeseburgers. 

American Crow

For the study, published just last week in the journal The Condor: Ornithological Applications, scientists measured the blood cholesterol levels of 140 crow nestlings living along an urban-to-rural beat in California. Researchers also supplied rural nestlings in New York with McDonald's cheeseburgers. The burgers were a huge success with the birds, and some gobbled as many as three a day. Other adult crows would bring home burgers to their nestlings or store them for later.

Like the city-bred crows tested in California, the New York nestlings developed higher cholesterol levels than their fast food-free peers. 

Though urban birds didn't live as long as their rural peers, on average, cholesterol wasn't to blame. 

"Despite all the bad press that it gets, cholesterol has benefits and serves a lot of essential functions," study author Andrea Townsend, a researcher at Hamilton College in New York, said in a news release. "It's an important part of our cell membranes and a component of some crucial hormones. We know that excessive cholesterol causes disease in humans, but we don't know what level would be excessive in a wild bird." 

Still, researchers don't recommend providing birds with fast food. "Wild birds haven't evolved to eat processed food, and it might have negative consequences that we didn't measure, or that will only show up over longer periods of time," Townsend said. "Feeding wild birds can be a great way to connect with nature, and it can be a refreshing change to think that we're doing something that helps animals out. At the same time, though, I do worry that some of the foods that humans give to wild animals, and living in an urban environment in general, might not be good for their health." 

Burger

Friends, you have been warned. Stick to peanuts and bird seed and ditch the junk food. You know it makes sense. 

Linking today to World Bird Wednesday.

Purple Patch

I was unavailable for Tuesday’s ringing session when Andy ringed another 35 birds at Oakenclough. He caught the first Siskins and Lesser Redpolls of the autumn and another couple of Tree Pipits but then excelled by catching an adult Spotted Flycatcher, the first full-grown “spot-fly” for a number of years. 

Not to be outdone I met up with Andy for another 0630 start on Wednesday. Oakenclough’s recent purple patch continued with 42 more captures of 12 species. There was an exciting morning of birding too, topped off by an adult Hobby about 11 am. 

We caught steadily from the off as finches provided the numbers while “others” provided the “star” birds: 14 Goldfinch, 9 Chaffinch, 4 Great Tit, 3 Meadow Pipit, 2 Blackcap, 2 Willow Warbler, 2 Goldcrest, 1 Chiffchaff, 1 Siskin, 1 Lesser Redpoll, 1 Tree Pipit, 1 Blue Tit, 1 Coal Tit. 

Both of today’s Blackcaps, a male and a female were birds of the year (juvenile) with the female showing faint fault bars on the tail. Fault bars are pale bands sometimes seen on wing and tail feathers and which are probably due to reduced metabolism with less melanin deposition during the growth of feather, typically during days when food is scarce due to natural causes or poor weather. We have seen few fault bars on young birds’ tails this year, almost certainly a consequence of the best year ever of UK weather as a whole and the best since 2006 in the North West. 

Blackcap 

 Blackcap- juvenile/first year female 

Today’s single juvenile Tree Pipit had a tiny mite attached to its face at the bottom of the right eye. We occasionally find such things around the eye and head of a bird but without specialist knowledge we can do little if anything to help. However, it is said that such ticks drop off when the ticks are finished feeding without any long term effect on the bird. 

Tree Pipit 

Tree Pipit 

Meadow Pipit 

I hope everyone spotted the difference between Meadow Pipit and Tree Pipit? 

Chiffchaffs have been strangely absent this summer and autumn, today’s recently moulted adult the first since 26th March. 

Chiffchaff 

In recent years we are finding a number of juvenile Goldfinches in full primary moult (replacing all of their primary feathers) in late/summer early autumn. These are juveniles from the earliest broods of April/May and June whose plumage is well worn by late summer. In the picture below the outer feathers are the browner and worn ones; the darker, blacker ones and the short, still emerging feather are the new “adult type” feather. However, the bird is still classed as a first year/juvenile until 1st January 2019 when of course it becomes a second year. 

Goldfinch 

It’s good to welcome back Siskins and Lesser Redpolls even though we caught just one of each - both adult females. 

Lesser Redpoll - adult female

 Siskin - adult female

Siskin - adult female 

Tail feathers

The birding was pretty spectacular this morning, even with the limited time between rounds. There was an early arrival of 150+ Swallows which arrived so soon after dawn that we thought to be from a local roost. As the morning progressed their numbers increased at the same time as a large influx of House Martins and a handful of Sand Martins. Our estimate of the numbers involved in both visible migration and those lingering while feeding was 375 Swallow, 260 House Martin and 10 Sand Martin. 

With so many hirundines about, we speculated about the possibility of a Hobby. About 11 am Bryan cottoned on to a raptor that arrived from the west and shot quickly through where the Swallows and House Martins were feeding. We had less than a minute as the Hobby circled and then flew directly over our heads where we were able to identify it as an adult rather than a bird of the year. 

Hobby - Falco subbuteo 

Other birds – 8 Grey Wagtail, 6 Pied Wagtail, 7 Buzzard, 2 Sparrowhawk, 2 Great-spotted Woodpecker, 1 Spotted Flycatcher, 1 Nuthatch. 

No Two Days Alike

Most bird ringers will agree that going to the same place on consecutive days may not be a good idea. That’s probably true for sites where the majority of birds are likely to be from a small local area but does not apply where a site attracts migratory birds, ones that are likely to be different individuals each day. And the theory definitely doesn't hold water in migrant hot-spots like coastal bird observatories where both ringing and observations on consecutive days is an absolute must to record day to day variations. 

I guess our site up at Oakenclough is a mixture of the above. For sure there are local birds but located as it is on the edge of the Pennines and with a clear view down to the coast just 12 miles away, there can be a large element of migration at certain times of the year. 

Andy and I had already been twice this week and clocked up almost 80 new birds, the latest on Thursday when we caught 52 of 10 species. So we had no qualms about heading up there again this morning and arranged our meet-up for 0630. 

Thursday was a pretty busy day but this morning produced a downturn in both numbers caught and species observed. Birds ringed 23. We processed 7 Goldfinch, 3 Chaffinch, 3 Long-tailed Tit, 3 Coal Tit, 2 Tree Pipit and singles each of Blackcap, Robin, Great Tit, Goldcrest and Wren. 

Today saw our ninth Tree Pipit of the week. All nine have been first year (born 2018) birds.

Tree Pipit 

After three new Coal Tits yesterday, two more today tells us that the species’ migration is probably under way. 

Coal Tit

Long-tailed Tits are definitely local birds. But we have not seen any large flocks of “lotties” just yet, flights that can number up to twenty, thirty or more individuals following good breeding success and mild winters. 

Long-tailed Tit 

Although we caught just the one Goldcrest today, there is little doubt that their autumnal migration is now on-going. 

Goldcrest 

We didn't record Willow Warbler today; our only warbler sighting consisted of the single Blackcap we caught, a first year male. Although Blackcaps breed close to this ringing site we are pretty sure that the three first years birds caught this week have been migrants. 

Blackcap 

This morning gave a good display of Chaffinch visible migration as small parties of between 2 and 20 individuals arrived from North and North West, flying overhead calling. From the total of approximately 80 observed, A small number stopped off and accounted for the three caught. 

Chaffinch 

About the only other visible migrant today was Swallow. Like the Chaffinches that moved in a similar time frame our Swallow sightings consisted of small parties of between 5 and 15 Swallows all heading south, either directly through or over the ringing site. 

Otherwise: 1 Buzzard, 1 Kestrel, 1 Spotted Flycatcher, 10 Pied Wagtail.

Linking today to  Stewart's World Bird Wednesday and  http://id-rather-b-birdin.blogspot.com.

Back For More

The forecast of little cloud and a 4 mph wind for Thursday looked so stable that we actually confirmed our arrangement for Oakenclough on Wednesday afternoon. This is a most unusual occurrence that more often than not involves a detailed discussion around whether a ringing session is even possible in our normally unsettled weather. 

I met Andy and Bryan for the 0630 start to a perfect morning of zero wind with just a little cloud together with a hint of sun peeking around the corner. 

Birds were on the move from the off and the morning proved productive for both ringing and birding. Goldfinches dominated the catch but we also bagged a few warblers and more Tree Pipits to add to those of Tuesday. 

Today’s catch comprised 52 birds of 10 species; in numerical order - 20 Goldfinch, 8 Chaffinch, 6 Goldcrest, 5 Willow Warbler, 4 Tree Pipit, 3 Coal Tit, 2 Blackcap, 2 Robin, 1 Great Tit, 1 Greenfinch. 

The twenty Goldfinches included an adult bearing a ring immediately recognisable as not our own due the unfamiliar series of letters and numbers – S524171. Otherwise the remaining Goldfinches proved to be first years/juveniles. Almost without us trying very hard it’s looking like Goldfinch will become the most ringed bird of 2018 due simply to its abundance in town and country. 

Goldfinch 

All four Tree Pipits proved to be first years/juveniles. All seven we have caught this week have been first year/juveniles. This is not surprising given that by the end of the summer birds of the year will outnumber adults in the ratio of approximately 5/1 and also that adults are thought to migrate earlier than juveniles. The recovery rate for ringed Tree Pipits is actually quite low, despite ”acute persecution” in Southern France and Northern Spain (BWP). 

Tree Pipit 

Tree Pipit

Five Willow Warblers gave opportunities to directly compare adults (born before 2018) with first years (born 2018). 

adult Willow Warbler 

first year Willow Warbler 

The two Blackcaps were first year birds, one female and one male. 

Blackcap 

We discussed how we’d not caught a Coal Tit for months and then, lo and behold, three turned up in quick succession, together with a single adult male Great Tit. 

Great Tit 

Not so with Blue Tits as they remain hard to come by up here – rather a strange thing to say about the most ringed bird on the BTO’s books. Our own observations and casual chatter elsewhere suggest Blue Tits may be the next to suffer from a drop in numbers. 

From as early as 0700 there was a noticeable movement of Swallows overhead which tailed off about 0900 by which time we had counted 80+. As the morning warmed more Swallows arrived from the North West together with smaller numbers of House Martins as both species aerial fed in numbers approached a combined 250/300 or more. 

Finches were also on the move as shown by our catch of both Goldfinches and Chaffinches with small parties of both throughout the morning. Not so with Lesser Redpoll, this has yet to appear as an autumn migrant up here. 

A number of Pied Wagtails appeared in late morning with 15/20 feeding nearby and a couple or more noted flying over and due south. Other birds noted in addition to those caught – 15 Willow Warbler, 2 Sparrowhawk, 2 Spotted Flycatcher, 2 Great-spotted Woodpecker, 1 Song Thrush, 1 Peregrine, 1 Treecreeper. 

Great-spotted Woodpecker 

The Spotted Flycatchers were along the nearby woodland edge of someone’s garden. These were the first I’d seen since May in Menorca where Spot Flys are ten-a-penny, unlike the UK where the species is another one in decline. 

Spotted Flycatcher 

The flycatchers were a good way to end an interesting and rewarding morning. And with the same forecast for Friday, who knows? We may be back for more. 

Linking today to Eileen's Saturday Blogspot.

Trepi Trio

At last! After a week of dire weather there was a 5mph wind; although there was a gloomy, misty start, the murky skies cleared within the hour. 

I met up with Andy at Oakenclough where we expected to catch up with the species, if not necessarily the individuals, we missed in the interim. At this time of year many birds are on the move in either post-breeding dispersal or actual southerly migration. If the weather is not too good birds will fly around or above the obstacle or even delay their flights until conditions improve. Such things make for exciting mornings when we may have an idea of what species to expect in but not necessarily the numbers. 

Gloomy Start 

The early overcast may have blocked some early movement but we finished up with 24 birds of 8 species as follows: 5 Willow Warbler, 4 Chaffinch, 4 Great Tit, 3 Tree Pipit, 2 Goldcrest, 2 Goldfinch, 1 Dunnock, 1 Robin. 

We caught the five Willow Warblers early one while it was still misty but none later, suggesting that they were leftovers from Monday or before. All five proved to be birds of the year. The numbers of young Willow Warblers seem to be up this year and we speculated that the excellent summer with the lack of the usual downpours has helped ground nesting species like Willow Warblers. 

Willow Warbler 

TREPI is the computer input code for Tree Pipit. Inputting this morning’s data is a job for later in the day via the BTO’s DemOn, (Demography Online) an on-line application which allows users to input their ringing and/or nest records. All three Tree Pipits were birds of the year – juveniles. 

DemOn 

As Tree Pipit breeds sparingly in the North West of England we can be fairly sure that the three caught this morning are from the Scottish population, or maybe even from Scandinavia. Maps that show the Tree Pipit breeding right across the UK are in fact inaccurate as the species' range is more limited. 

Tree Pipit distribution - RSPB 

Tree Pipit 

Tree Pipit 

Goldcrests are bang on time and we should now catch good numbers right through to November. 

Goldcrest 

Dunnock 

The young Robin showed just a hint of red breast. 

Robin 

There seemed to be Chaffinch on the move this morning when a few small parties flew over giving their characteristic, soft, “chip, chip” contact call. 

Chaffinch 

Other birds seen during the four hour slot -  1 Great Crested Grebe, 1 Buzzard, 1 Pied Wagtail, 1 Redshank, 2 Cormorant, 8 Goldfinch, 20+ Chaffinch.  After the mist cleared and the air warmed a number of Swallows appeared, mostly heading south in singles or small parties of between 2 and 6 individuals - in all 30+.

Linking today to Stewart's World Bird Wednesday

Early Pipit Late Owl

A 6 am start beckoned and I met Andy at Oakenclough in near perfect conditions - a light southerly, and compared to recent weeks, a temperature that felt quite agreeable. 

Once again newly in birds were rather limited so we struggled to reach double figures with just 10 birds ringed but the emphasis on quality rather than quantity: 5 Lesser Redpoll, 2 Willow Warbler, 2 Goldfinch and 1 Tree Pipit. 

In most years April 1st is around the normal date for the arrival of the first Willow Warblers so the two males caught today are approximately ten days “late”. Maybe they picked a good time to arrive with predicted temperatures of up to 64°F and fine days for next week. In so many recent years Willow Warblers have arrived into cool and wet weather that continued throughout May and had a detrimental effect upon their breeding success. 

Willow Warbler 

Lesser Redpoll 

Today’s Tree Pipit, our first of the year, was aged as a second year bird (born in 2017). April 14th is bang on the expected date of the first Tree Pipits arriving from Africa. 

Tree Pipit 

A Tree Pipit resembles the slightly smaller Meadow Pipit. Both are at first glance unexceptional looking LBJs, streaked brown above and with black markings on a white belly and buff breast below. 

The Tree Pipit is distinguished from the slightly smaller Meadow Pipit by its heavier bill, stronger more yellowish, heavier streaking and greater contrast with the white belly. The former also has pink legs rather than the flesh-coloured legs of Meadow Pipit. As the name suggests, Tree Pipits spend more time in trees than ground dwelling Meadow Pipits.  Tree Pipits breed across most of Europe and temperate western and central Asia. It is a long-distance migrant and spends our winter in Africa and southern Asia. 

The song flight is unmistakable. The bird rises a short distance up from a tree, and then parachutes down on stiff wings, the loud song becoming more drawn out towards the end.  It is many years since I heard the song here at Oakenclough where it used to breed in the open woodland and scrub of the late 70’s and early 80’s.  The habitat is still suitable now but unless the Tree Pipit regains its former population level it is unlikely to return. 

The Tree Pipit's flight and contact call is a buzzing "dzzz" sound, heard mostly during migration. It’s a high-frequency call that becomes harder to hear for us older generation birders. Luckily we can catch them, take a closer look and confirm that the label of “Little Brown Job” is far from the truth. 

The morning proved quiet in the way of birding except for the usual five or six Buzzards in the air as the morning warmed. Two Red-breasted Mergansers “over” and a smattering of redpolls proved to be as good as it got with little sign of visible migration. "Otherwise" local birds included a handful of Chaffinches, 1 Jay and 2 Mistle Thrush. 

The journey home was quite interesting by way of a Barn Owl hunting across farmland at 11.20am. Many Barn Owls are sat on eggs by now, a scenario that requires the non-sitting bird to spend extra hours in search of food. 

Barn Owl

Nearby I noted a single Kestrel and also a pair of Buzzards at a nest. The female was clearly visible in the huge pile of sticks close to the top of a tall, uncropped hawthorn hedgerow. Let's hope the conspicuous nest will not become a target for vandals and/or those who would harm the mostly harmless Buzzard.

Buzzards 

Log in soon for more birds from Another Bird Blog. In the meantime, linking to World Bird Wednesday and Anni's Birding.