A Swallow Morning

Andy’s shiny new battle wagon didn’t bring much luck today.  Just a week ago we had the best catch of the autumn so far with 43 birds, https://anotherbirdblog.blogspot.com/2020/07/business-as-usual.html.  

Ringing Station

This morning we set up the ringing station in the hatchback expecting a good catch on such a fine and warm morning.  If anything, the south-easterly breeze was a little too blowy with the glaring sun on mist nets providing an unwanted addition.   

There seemed to be few birds around and we struggled to even reach double figures with 4 Willow Warbler, 2 Goldfinch, 2 Wren, 1 Robin and 1 Chiffchaff.

Willow Warbler

All Chiffchaffs look unkempt at this time of year. Both adults and juveniles undergo their respective moults. The one below is in post-juvenile moult.

Chiffchaff

Goldfinch

Luckily and despite today’s poor numbers the month of July here at Oakenclough has been quite productive with 175 captures. Top spot was taken by Willow Warbler on 47, well clear of Blackcap and Chaffinch on 15 captures each followed by 9 Chiffchaff and 5 Garden Warbler.  Bonus birds came in unexpected singles of Sedge Warbler and Pied Flycatcher plus a couple each of Siskin and Lesser Redpoll.       

In contrast to our poor catch the morning provided a good show of visible migration by Swallows. The four hours with not much to do allowed time and opportunity to watch and count groups of Swallows. In the clear skies they arrived from the north in small gangs of 5-15 individuals that fed on the wing around the buildings and woodland edge before each one of them headed south.  We counted 150 + in four hours of observation. July 31st may seem early for Swallows to begin their long migration but that is exactly what they must do to reach South Africa for their second summer.    

Swallow 

Swallow Migration - BTO

I see Google has "improved" Blogger. Alright, it may take time to adjust to the changes but this has taken an hour instead of the normal 15 minutes.

Am I alone?

Linking today to Eileen's Saturday Blogspot and Anni in Texas birding.

And There’s More

Monday was the day I couldn’t make it - Summer Holidays and Grandparents Rule. Andy had been to Oakenclough and in less than ideal conditions caught another 20 or so birds with more Willow Warblers and Blackcaps. There was even an unlikely Sedge Warbler, the second one ever up here on the edge of Pennines at 700ft above sea level. 

Tuesday’s forecast promised a better morning with less cloud and higher temperatures. At 0600 the wing gauge read zero and the reservoir resembled a sheet of glass - most unusual in this often windy, wet spot chosen as a site in which to gather rainwater.

The Reservoir 

The omens were good as the very first round saw three juvenile Willow Warblers in the nearest net. We then caught steadily until the 1030 finish mandated by a dental appointment. 

Two or three themes emerged; the continuation of movement through the site of new Willow Warblers, Chiffchaffs and Chaffinches. Also, our fourth Garden Warbler of the year. By many standards just four Garden Warblers may not seem high but after a summertime absence for many years their reappearance augurs well for the species’ return here to breed in 2021. 

A good mix of species saw 27 birds caught – 7 Willow Warbler, 4 Chaffinch, 3 Great Tit, 2 Chiffchaff,2 Goldfinch, 2 Coal Tit, 2 Blue Tit, and one each of Greenfinch, Wren, Siskin, Garden Warbler and Blackcap. 

The juvenile Siskin was almost certainly a roaming and fairly local one. We are reliably informed that North of the Border in Bonnie Scotland their Siskins still swarm around garden bird feeders like clouds of green-yellow bees. Small finches like Siskins, Redpolls and Chaffinches have little reason to leave Scotland until the weather turns inclement and/or their food depletes. 

Siskin 

2020 has seen an improvement in the fortunes of Greenfinches. Many birders report seeing better numbers and we have started to catch a few here too. The one below is a juvenile female. 

Greenfinch 

Good numbers of Chaffinches around today as there has been for a week or so. It appears that Chaffinches have had a productive breeding season. 

Chaffinch 

Seven Willow Warblers today brought our total here to 32 in the month of July as the species moves through the locality. 

Willow Warbler 

One of today’s Chiffchaffs was about as small as they come. With a wing length of 56mm and a weight of 6.8 grams it was marginally bigger than a typical Goldcrest. 

 Chiffchaff 

If this weather holds we may get a crack at the Sand Martins and/or back to Oakenclough on Friday. Stay tuned to Another Bird Blog so as not to miss out.

Too Good To Be True

After another week of rain and rubbish weather we hoped that today’s forecast of a decent morning would be accurate. 

On the drive towards Oakenclough a hint of sun broke the early clouds. At 0630 roadside trees hardly stirred. This was all too good to be true. And so it proved.  For the next four hours Andy and I dodged periodic drizzle and showers that blew in from the west until we packed in at 1030 when light rain turned to a heavy wetting shower. 

Had the sun stayed around longer we felt sure that our catch would have been higher as despite the cool showers and grey skies, there seemed to be good numbers of birds moving through the area. Between the drizzly showers came post-fledging parties of Nuthatch, Chaffinches, titmice and Swallows. One of these moments brought in a Hobby that gave a rapid fly past before heading south east and out of sight. A birder who lives not far away reports seeing a Hobby every day of the week. 

Given the stop-start nature of proceedings we were quite pleased to finish with 28 birds of 13 species – 24 juvenile birds of the year and 4 adults - 8 Willow Warbler, 3 Chaffinch, 3 Coal Tit, 2 Chiffchaff, 2 Blackcap, 2 Treecreeper, 2 Great Tit and singles of Goldfinch, Robin, Wren, Blue Tit, Goldcrest and Garden Warbler. 

Pictures below - all taken at ISO800/1600 in poor light yet again. Whatever happened to summer? 

Treecreeper 

Coal Tit 

Goldfinch 

Willow Warbler

Chiffchaff

Note how the outline shape of the Chiffchaff wing differs from the Willow Warbler. The Chiffchaff wing is shorter and rounder with primaries 3,4 and 5 of similar length. Primaries 3 and 4 of a Willow Warbler wing are longer than primary number 5.

The sixth primary feather of the Chiffchaff is partially emarginated whereas the equivalent feather of the Willow Warbler is not emarginated. 

Wing of Chiffchaff

 Wing of Willow Warbler

The differences are easier to see from the drawings in my 1984 dog-eared edition of "Svensson". But the facts remain the same in 2020.

Chiffchaff 

Willow Warbler

 More news and views soon from Another Bird Blog.

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

Pied Surprise

It’s a week since my last posting. In between has seen rain, rain, then more rain, and no chance of birding, ringing or lifting a camera. Given all the foul weather I was not surprised by news from Chris at Cockerham where after two days of relentless wind and rain he found a dead Avocet youngster, one of the chicks ringed on 24th June. 

Avocet chick 

It appears that during the bad weather the adults moved the chicks from open water to a more sheltered part of the farm but at least one succumbed. Let’s hope there are no more fatalities. Fingers crossed too that the Avocets return here in 2021. 

Avocet 

On the strength of different forecasts Wednesday morning was pencilled in as a “maybe”, and Oakenclough as the venue. The previous visit of July 1st saw the first real hints of autumn migration. 

This morning I met up with Andy and Bryan at 0630 to a 15-20 mph easterly wind, far stronger than several forecasts that all suggested 6-8 mph. After each of us had driven 40 minutes or more we decided to continue in the less than ideal conditions in the hope the wind would drop. 

As the morning wore on the wind dropped slightly and allowed us a reasonable catch of 24 birds – 21 birds of the year and three adults: 5 Willow Warbler, 4 Great Tit, 3 Chiffchaff, 2 Blackcap, 2 Chaffinch, 2 Greenfinch, 2 Goldcrest, 1 Wren, 1 Dunnock, 1 Goldfinch, 1 Pied Flycatcher. 

Oakenclough springs a few surprises on most days. Our surprise today was the juvenile Pied Flycatcher. It’s a species we never catch in mist nets despite the fact that Andy rings many nestlings from boxes a quarter of a mile away. 

Pied Flycatchers are notorious for arriving unseen on their breeding sites and then leaving in autumn equally undetected. This one, AKE3941 was ringed at the nest box along with three siblings on 28 May 2020. 

Pied Flycatcher 

 Pied Flycatcher - juvenile/first summer

Greenfinch - juvenile/first summer

Chiffchaff - juvenile/first summer 

Willow Warbler - juvenile/first summer 

Strong early winds didn’t help our birding, a highlight being a passing Peregrine Falcon as it dive bombed a local Buzzard. Otherwise a few Swallows, a Great-spotted Woodpecker, Pied Wagtail and the arrival of autumnal Goldfinches around the feeders. 

Back soon. Don’t go away.

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

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.

Goldfinch Compensation

A red sky broke over the hills to the east of Oakenclough on Thursday. It was a warning we should have heeded. But after making the effort for a 6 o'clock start and all that entails, Andy and I saw little reason not to carry on. After all, just two days earlier here at Oakenclough we’d caught 45 birds including our record breaking catch of eleven Tree Pipits.

Red Sky In The Morning 

A couple of hours later we asked how two seemingly similar days could be so different in terms of both the birds around and those we caught. The differences were that Wednesday was warm and sunny with a gentle waft from the north while Thursday saw a stronger breeze, this time from the south west with cooler temperatures that demanded an extra layer of top coat for the ringers.

Nine birds was a very poor result, so pathetic that the only “A” rings required were for four Blue Tits. Otherwise a couple of juvenile “willys “and a single adult “chiff” proved the highlights of 4 Blue Tit, 2 Willow Warbler, 1 Chiffchaff, 1 Wren and 1 Dunnock.

Willow Warbler 

Chiffchaff 

Dunnock 

On Friday morning I hoped for recompense by way of catching Goldfinches, a few of those suddenly returned to the garden after a major absence of several weeks. The killer cat of next door has left for pastures new, allowing me to once again use a mist net on my own property.

The morning was quite breezy but where the relatively sheltered garden meant a reasonable catch was possible. Indeed it was with 21 Goldfinch and a single Robin caught until rain returned soon after lunch.

This ratio of species is very representative of gardens in our neighbourhood where larger, shyer or perhaps cleverer birds like Jackdaw, Woodpigeon and House Sparrow stay away when a net is set. Our own Woodpigeons are still pre-occupied with "woody nookie".

The fact that I caught entirely Goldfinches of the year, some still in very juvenile plumage, displays this species’ ability to reproduce throughout the breeding season with up to three broods recorded. 

Goldfinch 

Goldfinch 

The Goldfinch has enjoyed a wide population boom during recent years.

BTO - “Goldfinch abundance fell sharply from the mid-1970s until the mid-1980s, but the decline was both preceded and followed by significant population increases. The current upturn lifted the species from the amber list of conservation concern into the green category, accompanied by an increase in its use of gardens for winter feeding.

The Breeding Bird Survey map of change in relative density between 1994-96 and 2007-09 indicates that increases have occurred almost everywhere, with the exception of the far southeast. These population changes can be explained almost entirely by changes in annual survival rates, which may have resulted from a reduction in the availability of weed seeds, due to agricultural intensification, and subsequent increased use of other food sources such as garden bird tables and niger feeders; for migrants, the effects of environmental change or increased hunting pressure in France and Iberia, where the majority then wintered, may have temporarily reduced survival rates (Siriwardena et al. 1999).

There have been no clear changes in productivity as measured by Nest Records Scheme and Constant Effort Sites (ringing). The recent severe losses of Greenfinches from gardens are likely to have afforded Goldfinches far better access to provided food. A strong trend towards earlier laying may be partly explained by recent climate change (Crick & Sparks 1999).

There has been widespread moderate increase across Europe since 1980. A strong increase has been recorded in the Republic of Ireland since 1998 (Crowe 2012).” 

Goldfinch - BTO/JNCC BirdTrends Report 

Stay tuned to Another Bird Blog. There's more news, views and pictures soon.

Linking today with Anni's Birding and Eileen's Saturday Blog.

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.