Under Rydon Hill

Welcome to this blog about my time away from the tedium of domestic management. Once called "Tits and Things", now sub-titled "Life in Quantoxia", there's plenty of bird ringing (90%), some odd bits of general birding, some local steam trains, some personal bits and occasional 'away days' in other parts of Britain. Rydon Hill overlooks the lower valley of the Doniford Stream, where most of these activities take place.
Showing posts with label autumn passage. Show all posts
Showing posts with label autumn passage. Show all posts

Monday, November 3, 2014

We're on the move

Things have been a little slow of late, hence the long interval between posts, but there seems to be some movement just recently. Over the past three weeks, my new bird totals have been 17, 17 and 34 - and the weekly species total has risen to twelve.

First year male Goldfinch completing PJ moult (October)
Naturally, at this time of year, Goldfinches have returned to Number 1 spot, with 18 new birds and 9 retraps last week, despite the periods of wind and rain that hamper much of our ringing hereabouts.  I am well over 500 new for the year already - with the main influx of newbies still to come (hopefully) - plus 72 individuals from last year, 14 from 2012 and 7 from the year before, my first here.

First year male Blackcap (October)
Same bird - underside (note the pale yellow flush)
The other tell-tale sign of winter is the catching of Blackcaps; the first (a 1CY male) on the 18th was right on cue, then another (1CY female) on the 22nd and three more since. I checked on the number of birds that were ringed in the orchard last winter (November - mid-March); it came to 22 birds, with two of those returning from previous winters.

Fun shot of a male Goldcrest's crown feathers
Another sign of the impending short days was the presence of a few new Goldcrests. The species breeds quite locally to us and I retrap birds from March to June, but after that it's only the odd new bird until the clocks go back when we then expect some winter arrivals, most likely passage birds heading for the Exmoor forests to the south-east of us. 

The bird that is missing so far - is Redwing. I saw one locally on the 14th and then a flock of 18 on the 25th. There was a major arrival on the north-east coast of England overnight on 28/29th so it will be another week or so before we see them regularly and, hopefully, one or two in the net.

Perversely, we saw a Swallow hurriedly heading south over the house on the 22nd in the late afternoon! Our local birds left ages ago.

The composite list for the last three weeks is: 
[same period retraps omitted]
Gt. Spotted Woodpecker 1 - adult male
Goldcrest 3
Blue Tit 1 (5)
Great Tit 1 (1)
Long-tailed Tit 4 (6)
Chiffchaff 1 - hatch year female
Blackcap 5
Wren 3 (3) - all young birds
Blackbird 2 (3) - just the 1 adult (female), retrapped
Robin (3)
Dunnock 2 (5)
House Sparrow 5 (6)
Chaffinch 1
Greenfinch 1
Goldfinch 38 (18)
118 birds of which 68 were new birds

Immature male Great Tit. Note the large, shiny bib.

One piece of late news - the southern end of the meadows has been fenced off, the horses now confined to the northern section. This means we can put nets up again, not just while the hay crop is growing.


Sunday, October 13, 2013

Start of the rainy season

Here in Somerset, our wettest months are October through January as a rule, with at least 4 inches (104-110 mm) of rainfall on average each month. However, it can be nearly 6 inches (140+ mm) in one of those months.

From a ringing perspective, the possibility of catching good numbers does increase throughout these four, traditionally wet, months. The reason for this is two-fold. Firstly, the natural food supply dwindles and birds are drawn more to human habitation, and, secondly, as the food supplies run down in the east of the country (the side that most migrants first land on) the birds move westwards seeking under-used resources. That is how we differ from all those ringers gathered on the North Sea coast. They catch the rarities, we ring the survivors.

Talking of which, here are a couple that I received recently from BTO HQ.

Male Chaffinch - minimum of 4.5 years old
This bird died when it hit a window. It may even have been the kindergarten on the T-junction. Strangely, I have driven passed the spot (10 km N of Gjovik) when I lived in Norway as I was going to my girlfriend's girlfriend's home just the other side of the lake at Nes.

Male Blackcap - found here post breeding, the year after
it left 
the country for the first time (E. Sussex)

It seems that many summer migrants prefer to move to the south-east of the country before they make the crossing to France. Sensible, really - it's shorter and therefore less hazardous and with more options of making landfall whatever the wind direction.


... and one that came via email from another ringer. [details to follow]
Adult Female Hawfinch
now sporting colour rings

This bird (featured in my header) had travelled 188km in a northerly direction to the Dolgellau area where it was handled in late March. There is one other recovery of a bird ringed in the county; from Wellington to Clumber Park (Notts), a distance of 293km. There is one, relatively local, recovery in Somerset; from Gwent (Monmouthshire as was), the other side of the Bristol Channel.


So far this month, things have been a tad "weak", with a mere 19 new birds and 13 re-traps to date (1st-12th). We have also had our fair share of rain (>60 mm) with a bit of a northerly wind blowing.

Robin 1 (1) - both dispersing immatures
Blackbird 2 - both birds of the year with dark bills
Chiffchaff 2 - young males on size and tail
Long-tailed Tit (2) - 1 ringed as a juv back in August, the other was a fully grown bird back in January 2011.
Coal Tit 1 - this year's youngster
Blue Tit 3 (3) - just the one adult (r/t, 2009 or older)
Great Tit (1)
House Sparrow 1
Greenfinch 2 - both juveniles coming to the end of their limited (first) moult
Goldfinch 7 (5) - 6 of the new birds were females, 4 of the r/t birds were male.

This autumn passage period we have been severely short of out-going Chiffchaffs and Blackcaps to ring and are still waiting for an exodus of Goldfinches.

The Redwing flocks (of 15-30) did not appear here until Saturday 11th. Possibly these were birds that have travelled down from Scotland along the west side of the country until they hit North Devon and then turn east to reach their preferred destinations, somewhere further inland from us.

Let's just see what turns up later in the month!

Monday, September 9, 2013

End of a difficult summer

Ringing activities have been confined to the garden/orchard these last 8-9 days. It has been somewhat different for the time of year when compared to other years. So far, there has not been an appreciable movement of Chiffchaffs and Blackcaps hereabouts. In part this may be attributable to the low numbers of Blackberries that have ripened so far, which, apart from providing sugar rich food for migrating birds, also attract significant numbers of diptera and other insects for these travellers to feed on. Also in the boundary hedge, our Honeysuckle has a profusion of berries but they are not palatable yet.

Honeysuckle berries
Back to the species list for this time period. For the sake of a couple of nets open for a couple of hours most mornings (commencing about half an hour after sunrise), it turned in a reasonable total of 28 new birds and 18 re-captures across 11 "garden" species.

Blue Tit 2 (2) - 3 young birds (2 potential males, 1 potential female) plus a 2CY male
Great Tit (1) - ad. male, ringed in the spring
Blackcap 3 - a handsome young male, & 2 females undergoing PJ moult
Wren 3 - all unmoulted juvenile males (on size & weight)
Blackbird 2 (2) - 3 young birds & a 3CY male
Robin 3 (3) - juveniles & post-nuptial females
Dunnock 1 (1) - 1 juv., 1 2CY in moult
Chaffinch 1 - juv. male at the replacing its ogc's stage (2ogc). This bird had replaced a few tail feathers (retrices) on one side. The photo shows the differing shapes between juvenile feathers (pointed) and replacement/adult ones (more rounded)

Juvenile (male) Chaffinch with rounded replacement
tail feathers (LHS) contrasting with the pointed juvenile ones

Greenfinch 4 (3) - 3 females, 2 males & 2 juv. males
Goldfinch 9 (6) - in the last 2 days - 7 moulting adults & 8 youngsters in PJ moult.  The adults all had 2-4 old outer primaries and 2-3 growing feathers. They had all begun to moult their secondaries, too. Previously, almost all recent birds have been juveniles in entirely juvenile plumage (before the PJ moult starts)
Siskin 1 - a juvvy juvenile (i.e. recently fledged!) and female.

This week's juvenile female Siskin

This small group of eighteen re-traps has provided some interesting data. 

Firstly, a female Robin (L601), ringed as a juvenile here in early July 2011, goes missing whenever she is nesting. In mid-April 2012, she was caught three days apart with a vascularised brood patch, indicating that she was starting to incubate. This was just before our big "downpour" (= major flood). She was not re-caught for a further 162 days (or 23 weeks) when she was coming to the end of her complete, post-nuptial moult. But her brood patch was still visible, although feathering up. Between these two dates it is wholly possible that she reared three broods, which is quite normal for a fit member of the species, providing there are no mishaps.
In 2013, however, she was caught in mid-March and mid-April. Between those dates, going by her brood patch, she had laid, incubated and hatched a brood. This struck me as "odd", since the weather had been cold (but dry) up until the end of the first week in April. Perhaps cold-and-dry is preferable to mild-and-wet for starting a brood of Robins. Anyhow, she wasn't to re-appear for another 106 days (15 weeks), time enough for another two broods. Once more she was completing her annual moult, just some body feathers to finish changing, and some 5-6 weeks earlier than last year. 

Next, male Blackbird (LC36), ringed as a 1CY bird in mid-November 2011, is a regular visitor to the garden and can be recognised by his plumage pattern (which is less obvious since his latest moult). Last year he disappeared for 373 days (29 weeks). He was last spotted the day after the big "downpour" and returned about the time the rains eased off. During his absence, we had 711 mm of rain (28 inches), which is 55% more than normal. I wonder what he was doing and where he went to escape the waterlogged soils?

Then there is a Greenfinch (TL94). First ringed as a 2CY female on my birthday (mid-Feb) 2012 and not seen again until this week, 568 days later. The weight was the same and the wing length a tad longer, and she was starting her annual moult. Has this bird been around all the time or does she just come for the winter and the sunflower hearts?

Lastly, the Goldfinches. Six of those adults have a record. X843 is a 2010 male bird that hasn't been recorded since mid-June 2011, a gap of 820 days. His wing length is 1mm shorter than when he was a juvenile; a normal occurence in this species, whereas in some species it increases with age (e.g. tits). X882 is another male, born in 2009 or earlier, that was ringed in April 2011, re-caught in May 2012 and then again this week. He is currently in the 2nd stage (of 4) of replacing his primaries. Male L713 and female L963 were both immature birds when trapped in 2011. Neither have been seen since, a gap of 765 and 671 days respectively. Now in their third year, they were moulting and are 1 gram heavier than when they were young (approx. 7%), in keeping with the other healthy birds. The other two, males Y819 & Y930, were caught during last winter when their weights were higher than they are now; the current night time temperatures are 7C higher and daytime ones 13C higher, which explains the need for carrying extra fat in winter in order to keep warm overnight.

Young male Goldfinch acquiring its red cap

PJ = post-juvenile;   CY = calendar year;   ogc = old greater coverts;   juv. = juvenile

Monday, August 19, 2013

Wake up to Whimbrel

The weather hasn't been all that conducive for ringing of late - and probably not for the birds, as well, while many are undergoing their annual moult in preparation for winter or a long journey south. Seven new birds in the garden/orchard and 12 new birds down at the meadows/stream is not a lot to show for eight days at, what should be, peak migration time.

Today, I noticed more Blackcaps around, 'ticcing' from the trees and hedgerows. Yesterday, we were lucky enough to see 14 Whimbrel just after dawn, in-off the Bristol Channel on their way to some resting and feeding spot further south. The birds were calling and flying in line-astern. The most noticeable event of the week was the number of newly fledged, and, as yet, unmoulted juvenile Wrens, six in all (or 25% of the catch!)

The lists: 
House - Blue Tit 1, Chiffchaff 1, Wren 3, Blackbird 1, House Sparrow (1) & Goldfinch 1. Every bird was a juvenile.

Juvenile Whitethroat
Farm - Kingfisher (2), Blue Tit 1, Long-tailed Tit 1, Chiffchaff 2, Blackcap 1 + a control, Whitethroat 1, Wren 3, Robin 1, Dunnock 1.

Juvenile (female) Kingfisher [retrap]
Again, all juveniles except the controlled Blackcap, which was an adult male and just over half way through its wing-moult. [Y922nnn if anybody's interested]

As I have family duties to attend to over the next three days, it will be the weekend before we get another chance for ringing or birding. I've also been told that the badger cull starts hereabouts next week, with pre-baiting already on the go.


Sunday, August 11, 2013

A fortnight later ...

 Time flies when you're having fun. My fun has had to be split between getting the garden back into shape, now that we've had some significant rain, and getting out ringing. Actually, much of my time has been spent in the garden, either strimming and raking, treating the Horse-tail, mowing, light pruning, hedge trimming or ringing some birds.  

The highlights from the latter have been the catching of two parties of Long-tailed Tits. The first contained five new birds, all youngsters under-going a full moult (one of those odd UK species that does this), plus two adults with consecutive ring numbers that were not of my doing. Two days later, I caught four more youngsters, and then, a week after the initial encounter, two more ringed adults, and two juveniles from the original session. It turns out that all four of these adult birds were ringed at the same time, back in late October last year, in friend John's garden the far side of the village (approx. 2 km away)  

So here are the results from an hour or two most days, once the kittens have come in for their breakfasts. There is still not a lot of movement.
Blue Tit 1 (2)
Great Tit 2
Long-tailed Tit 9 + 4 "controls" (see above)
Chiffchaff 2 - local birds?
Wren 2 (1) - the retrap was a "first brood", the others more recent
Dunnock 4 (2) - all juvs
House Sparrow 7 (2) - mainly incidental to trying for the next species 
Pied Wagtail 7 (3) - the main target species, as they are still nesting nearby
Chaffinch 1 - juv
Greenfinch 3 - moulting male & female plus a 'youth'
Goldfinch 3 - freshly fledged juveniles


Young Pied Wagtail (M.a.yarelli)
House totals = 11 species, 41 new birds, 10 re-traps & 4 'controls'.
Oh! And the Sparrowhawk has been in twice. That's according to the heaps of feathers from two unlucky Collared Doves.

I have also been able to get down to the meadows, twice on my own and once with company. Quantity low, quality high. Birds not caught include two Green Sands, a couple of Dippers, more Kingfishers, several Whitethroats, Swallows and martins and the (three) Little Egrets currently there on a daily basis. Would love to catch and ring a full adult Egret. It has been done!

The Himalayan Balsam is flowering well down by the river and the bees are busy pollinating it, making sure there will be a plentiful supply of seed for next year. The Rose-bay Willow-herb is also coming into flower, a plant I much prefer.


Rose-bay
Today's photos are all from this sub-site.

Young female Kingfisher

Young female Chiffchaff (starting PJ moult)

young Sedge Warbler (fat score 30)
Kingfisher 3 (1) - all juveniles; "and still they come!" (10 so far)
Chiffchaff 7 - all juveniles, mostly males
Blackcap 1 - a 2CY male bird that hasn't started moulting; still breeding?
Sedge Warbler 1 - second bird here this year; fat score of 3 (tracheal pit almost full) and 12.6 grams in weight/mass; "on it's way south to Senegal (?)" This bird could easily put on another 10 grams before it is ready to fly out over the Atlantic in a non-stop flight to West Africa.
Wren 1 (1) - young males
Dunnock 1 - a juv-juv
Grey Wagtail 3 - new species for the year; these were all juveniles


one of the 3 young Grey Wagtails
Farm totals = 7 species, 17 new & 2 re-captures.

There are still plenty of birds to come but I won't wish my life away just yet!
Back soon.

Tuesday, July 23, 2013

Sivsanger og flere

Well, they cut the hay, teddered it the next day and baled it the day after. All was now clear to get onto the site beyond the area where they had been working on the river bank "repair". Three hours of blood, sweat and tears (high pollen count) saw another four racks cut out through head-high banks of thick nettle, reed, bramble, rose bay and Himalayan balsam. Two years ago I attempted a couple of sessions in the same places during August and concluded that it might be a good place for warbler passage. Now to put it to the test over the next two months.

This sub-site is right under a traditional Buzzard nest (below).



In between rounds. we were entertained by three Little Egrets, one of which was getting the worst of it. The local Swallows are now up to 40+ and going for another tranche of broods. Three Linnets appear every morning, flying high over the trees after exiting from somewhere close by; but where? 


Rear view of a young male Kingfisher
The Kingfishers and Dippers put in occasional appearances, as does the odd Blue Tit; there's an enigma in the middle of nowhere! Other signs of autumn - a Green Sandpiper flew backwards and forwards over our heads, giving its characteristic yodelling 'tittu'ee-tittu'ee' call, a Jay announcing its presence with its far-carrying call and the return of the cackling winter Canada goose flock.

We are also able to get a short net across the stream/river close by, where it could be possible to catch those migrant sandpipers as a bonus. The feeding Swifts are a bit trickier, but watching them dive down low between the reeded banks is satisfaction enough for a few (all too few) more weeks.

A couple of consecutive early morning sessions saw 13 species caught, 5 of which were warbler species. It's early days yet.


2CY male Common Whitethroat

Juvenile Blackcap

2CY male Blackcap

Juvenile Sedge Warbler
The list:
Kingfisher (1) -  from just over a week ago
Great Tit 1 - just one of several that "own" this stretch of river
Chiffchaff 3 - all juvs. as expected, and all males on size
Willow Warbler 1 - first of the autumn, a juvenile female
Blackcap 6 - including a pair of 2CY birds (nesting) 
Whitethroat 1 - a male nesting nearby; they must be close to having free-flying young by now (breeding hampered by the cold weather until 4 weeks ago)
Sedge Warbler 1 - first of the autumn, a juvenile
Wren 2 - incl.a very bleached and abraded old male (6M)
Blackbird 5 - included a 2CY pair
Song Thrush 2 - a first and a second brood bird (3O & 3JJ) 
Robin 4 (1) - 1 2CY adult
Dunnock 1 - juv. just starting post-juvenile moult (3JP)
Chaffinch 1 - juv male (on size)
New - 27, re-captures - 2

2CY European Robin

Adult (3CY+) male Eurasian Wren
Situated in a wide valley surrounded by hills, come nine o'clock, the sun reaches all parts of the site and we call it a day. Recently, there has been a stiff north-easterly blowing which also hampers our efforts. You can't win them all and we have to grab any reasonable chance that presents itself. That, we hope, will be another couple of sessions this week-end - after some sorely needed rain. [Last night's storms missed us]