Showing posts with label Fog. Show all posts
Showing posts with label Fog. Show all posts

Monday, 19 September 2016

Billinge: 15th & 18th September 2016

The 15th was one of those days were expectations were high but very murky conditions stifled overhead passage and kiboshed my hopes of a good catch of Meadow Pipits and Grey Wagtails. Visibility was poor and restricted to about 1 or 2 km for much of the morning and while you could call it misty the vegetation and nets remained bone dry because of the high temperature. Some birds were moving despite the conditions and a few Meadow Pipits shot through and the odd Siskin and Song Thrush was heard calling through the murk but there were big gaps with nothing moving overhead.

Fortunately there were a good few birds in the bushes and a total of 49 were caught. Chiffchaffs topped the totals once again with 15 new birds and 1 retrap but Goldcrests weren't far behind with 12 new birds and a control (a bird ringed elsewhere). It shouldn't take long to get the ringing details back for this bird and it will be interesting to find out when and where it was ringed as we are still in the early stages of autumn migration for this species.

Control Goldcrest.
Details of when and where it was ringed will be posted in due course.
The remainder of the catch didn't produce any surprises and the totals for the morning were: Goldcrest 12 (1); Blue Tit 1; Coal Tit 1; Chiffchaff 15 (1); Willow Warbler 1; Blackcap 6 (1); Robin 4; Dunnock 1; Bullfinch 1; Lesser Redpoll 1; Reed Bunting 3. Total 46 new birds, 2 retraps and 1 control.

The crown feathers of one of the Blackcaps was a mixture of brown and black with the individual feathers being a mixture of colours rather than some of the feathers being brown and others being black. A small proportion of male Blackcaps have some brown in the crown like this bird although the amount does vary.
I suppose you could call it a brown crown with black highlights or streaks.

September usually sees some good movements of Robins through the site but numbers have been much lower than usual so far this autumn. 
The 18th started off a bit misty but soon became depressingly foggy. The fog just wouldn't burn off and although it thinned from time to time it didn't finally clear until late in the morning when it was time to start packing up. The conditions severely limited movement overhead, as you would expect, although the occasional stratospheric Siskin was heard and the fog also made the nets more visible for much of the session.

One or two Song Thrushes were calling as I was setting up so it wasn't a surprise when one was in the net on the first round. However, it wasn't one of the locals and its colder and more olive upper parts pointed to it being of continental origin. The first migrant Song Thrushes usually arrive in early to mid September and more continental birds reach this part of the country than is often appreciated.

The catching rate was much slower than the final total of 40 new birds might suggest and there were several blank net rounds. Goldcrests topped the totals and the 18 ringed is the biggest catch of the autumn to date. It also brought the number ringed so far this month to 106. There were very few Chiffchaffs around compared to recent visits and only 4 were ringed but Blackcaps continue to move through the site in similar numbers with another 6 being caught.

Ringing totals for 18/09/16 were: Goldcrest 18; Blue Tit 1; Great Tit 1; Chiffchaff 4; Blackcap 6; Wren 1; Song Thrush 1; Robin 3; Chaffinch 5. Total 40 new birds.

Tuesday, 22 September 2015

More F F Fog

The forecast for this morning looked quite promising with a band of showers predicted to move through in the early hours and followed by a relatively clear and dry dawn. I expected this to result in a good movement of diurnal migrants over Billinge; however, my optimism was soon dashed when a misty early start deteriorated into a very foggy dawn. At one point visibility was down to around 200 metres and every time it looked like the fog was starting to clear more fog would roll back in.

It seemed like plenty of birds were itching to move and every now and then a few Meadow Pipits dashed through and gave a taste of what could have been had the conditions been better. Grey Wagtails weren't daunted by the conditions either and a total of 7 went south before the fog eventually cleared at around 10am. Other birds with itchy feet included a few Skylarks, Chaffinches, Lesser Redpolls, Siskins and Reed Buntings.

It was good to catch another 2 Grey Wagtails but without the fog I would have probably caught 4 or 5.

Grey Wagtails are easy to age with first year birds usually having 1 or more unmoulted greater coverts. This bird  had only replaced 1 greater covert and this feather stands out as being darker and fresher looking than the 9 unmoulted feathers.

It is getting late for Whitethroats now and this one could end up being the latest record for the site this year
The most unexpected sighting of the morning came when 2 Egyptian Geese headed north just after 10am. They really took me by surprise when I first glimpsed them out of the corner of my eye and they even caused me to lift my bins faster than usual.

Ringing totals were better than I had expected given the foggy conditions but fell short of what I had hoped for in terms of numbers if not variety. The Woodpigeon was a nestling from a nest I have been watching for several weeks now. The nest is only 4ft off the ground in a hawthorn bush and is the lowest Woodpigeon nest I have ever found.

A well fed Woodpigeon nestling.
Ringing totals (retraps in brackets) for 22/09/15 were: Woodpigeon 1; Meadow Pipit 2; Grey Wagtail 2; Dunnock 1; Wren 2;  Robin 1; Whitethroat 1; Chiffchaff 4 (1); Goldcrest 6 (2); Chaffinch 3, Goldfinch 1; Linnet 1, Lesser Redpoll 1; Reed Bunting 2. Total 28 new birds and 3 retraps.

Monday, 21 September 2015

Low 'Vis' Weekend

The weather forecast for the weekend had been looking really good with a large ridge of high pressure positioned over the country and the prospects of clear blue skies. The conditions looked like they would be perfect for migrants to be on the move at Billinge and I was hopeful of getting my first good catch of Meadow Pipits of the autumn. I was really keen to make the most of the weather and was up early on Saturday and had 3 nets set by first light. It was a bit misty but I expected that to burn off quickly once the sun was up. Unfortunately the mist lingered and got worse with visibility restricted to around 2 miles for the first couple of hours or so.

The low visibility had its impact on diurnal migrants and only a few pipits, wagtails and finches pushed through. The bushes seemed to be fairly quiet but there was another little rush of Goldcrests first thing with all but 1 of the 14 ringed being caught in the first hour. One of the Goldcrests was unusual in that it had a slightly longer and down-curved bill that give it a striking appearance. A few Chiffchaffs moved through later in the morning when the mist had started to lift with one being a control and the 3 new Robins were all likely to be migrants. There were a few more Linnets around than of late with birds moving between nearby feeding areas and a few of these were intercepted towards the end of the session.


The bill of this Goldcrest was a bit longer and heavier looking than normal but it was the down curve that made it look really unusual.
Its unusual bill has a little bit of a Treecreeperesque look to it.

Control Chiffchaff HVR169.
Small numbers of migrant Robins have been a feature of recent visits. The site doesn't have many resident Robins and the few there are don't usually frequent the ringing areas so any new Robins that are caught are pretty much guaranteed to be migrants.
Ringing totals (retraps/controls in brackets) for 19/09/15 were: Meadow Pipit 2; Grey Wagtail 2; Robin 3; Blackcap 1; Chiffchaff 5 (2); Goldcrest 14; Chaffinch 1; Linnet 6; Lesser Redpoll 3 (2). Total 37 new birds, 3 retraps and 1 control.

There was meant to be a bit more of a breeze on Sunday and I hoped that would help keep the mist away but when I got up I could see it was foggy and not just misty. I thought twice about going out given the conditions as I knew the fog would make the nets much more visible. Anyway I decided to give it a go just in case the fog lifted when the sun came up.

I put up the usual nets and caught 2 Blackcaps and 2 Goldcrests in the half light but then the fog started to have more impact as the light levels rose. I didn't catch anything in the next net round and thought about packing up but I decided to give it just a bit longer on the off chance the fog would clear. At about the same time a flock of about 50 Linnets gathered in the trees near one of the nets so I decided to play a lure and they immediately came down to investigate. On checking the net I found I had caught 18 Linnets and while I think the fog made the lure more effective it also made the net much more visible so both helped and hindered the catch at the same time.


All bar one of the Linnets caught were first year birds like this bird. The partially concealed red feathers on the breast show this bird is a male. 

1CY Linnet.
By the end of the morning there was a flock of about 90 feeding in a nearby field. 
The conditions slowly improved as the morning wore on but it came too late to stimulate much in the way of movement. Matters weren't helped by lingering fog that affected some of the surrounding areas, especially towards the north and east of the site. The final total of 47 birds was very good given the conditions and was largely due to the 25 Linnets that were caught. 

Ringing totals (retraps in brackets) for 20/09/15 were: Sparrowhawk 1; Robin 2 (1); Blackcap 3; Chiffchaff 3; Goldcrest 6; Blue Tit 1; Greenfinch 1; Linnet 25; Lesser Redpoll 3; Yellowhammer 1. Total 46 new birds and 1 retrap.

Juvenile female Sparrowhawk. Always a delight to catch and always a bit of a handful.

Sparrowhawks often manage to climb out of nets just when you are nearing them and females, being larger, usually find it easier to escape than males. Luckily this one didn't get away but it got very close to doing so.
Now look into my eyes, my eyes.

Monday, 6 April 2015

5th April 2015

Although the weather has improved it has thrown another spanner in the works in the form of fog. I went to Crawford yesterday morning and it was grey to say the least. Summer visitors are still thin on the ground but I have been keeping the nyger feeders going there in the hope of a few Redpolls joining the Goldfinches so it was the best option for ringing some birds. I put a couple of nets up as the fog wasn't too thick and more importantly wasn't condensing on the vegetation so wouldn't be a problem on the nets; however the generally grey conditions still made them that bit more visible. A few Goldfinches and a couple of Lesser Redpolls came to the feeders but they all managed to avoid the nets. After a couple of hours and with the fog only lifting slowly I packed up having ringed just 3 birds - 2 Yellowhammers and 1 Dunnock.


A foggy view over the farmland at Crawford yesterday morning.
Male and female Yellowhammers. When you see a pair like this it is hard to believe that some can be difficult to sex.
Male and female Yellowhammers.
The sun came out in the afternoon so I went to have a look at a Nuthatch nest that my son had found the day before. The tree the birds are nesting in is close to a path so they are accustomed to people passing by and I thought that may give me a chance to get some photographs. I wasn't disappointed and the female returned to work on the nest with us standing about 12 metres away.


The birds have picked a natural cavity and at first glance didn't appear to have narrowed the entrance with mud as they usually do.
When the bird went inside I could see she had plastered it up with mud on the inside and had only left a small hole which she really had to squeeze through to get into the nest chamber. The birds wing stretched out over her back as she forced her way in.
Taking a peek while she adds a bit more mud to the already tight entrance to the nesting chamber. There is quite a wall of mud in there.
The bird then squeezed its way out shutting its eyes in the process.
Made it.

Sunday, 12 October 2014

Fog and more fog

What had looked like being a very promising weekend was marred by fog yesterday morning and again today. Fog leaves very fine water droplets on mist-nets making them easier to see and even if the water droplets aren't too much of a problem the nets are just more visible in the grey conditions. On arrival at Billinge on both mornings the fog wasn't that thick at first so I set up a couple of nets but the density of the fog did vary a lot and localised clearances came and went. Conditions generally improved from mid morning on both days with the fog eventually clearing to leave gorgeous afternoons.

A few migrant Song Thrushes, Chaffinches, Meadow Pipits and Reed Buntings were moving about despite the conditions, especially when the fog partially cleared. Some Goldcrests seemed to have been grounded overnight as none were seen or ringed yesterday and 11 were caught this morning. Similarly a Blackcap was probably new in overnight. A Stonechat that was present yesterday couldn't be relocated today so had presumably left in the clear conditions last night. Pink-footed Geese were moving in some number on both days but especially today. Those that could be seen were flying west although most were only heard through the murk.

Song Thrush.
Looking at the weather forecast more migrant Song Thrushes should be moving through in the nest few days and we should also see the first big arrivals of Redwings and Fieldfare.

All the Song Thrushes caught were continental birds being more olive on the back.
Male Chaffinch.

Male Reed Bunting

Goldcrest.
Female Blackcap,
Probably a late departing summer visitor rather than a newly arrived winter visitor.
The final ringing totals were quite good considering the conditions. There were a few blank rounds because the nets were very visible at times but overall it was worth sticking it out on both mornings.

Combined ringing totals for 11th and 12th October with retraps in brackets.
Chaffinch 39
Goldfinch 4
Linnet 2
Reed Bunting 3
Tree Sparrow 1
Song Thrush 6
Goldcrest 11
Blackcap 1
Meadow Pipit 1
Coal Tit 2
Long-tailed Tit 1 (3)
Willow Tit (1)
Total 71 (+4 retraps)

Sunday, 14 October 2012

Really Fogged Off

My heart sank when mist and fog were forecast for this morning and sank further still when I got up at 05:50 to find the forecast was correct. Fog is generally bad news for ringing as it can suppress any migration and makes nets easier to see. I had three choices – go back to bed, watch the Korean Grand Prix or go ringing at Longshaw as planned and hope that it would lift quite quickly.

Sunrise through the gloom at a foggy Longshaw ringing site.

Adjacent farmland through the gloom.
I went with the latter and hoped the fog would burn off leaving clear blue skies and stimulating some movement. I put up a couple of nets and set up a couple of mp3 lures playing Grey Wagtail and Goldcrest initially. The first round of the nets lifted my spirits a little with a Grey Wagtail and Song Thrush being caught. The Song Thrush appeared to be a continental bird being more olive grey on the upper parts, especially noticeable on the nape,mantle and rump unlike our much browner British version.

Song Thrush (Turdus philomelos).
The generally olive-grey upperpart of this bird suggested it was of continental origin.

Song Thrush (Turdus philomelos). Olive-grey back and rump suggest this bird is of continental origin.
Grey Wagtail (Motacilla cinerea)


The fog looked like it would clear quite quickly at first and allowed few birds to move but then closed in again, only finally clearing at 11:30. A few Song Thrushes were calling from the bushes and 3 others flew south east but only two Redwings were seen. The first Brambling of the autumn was heard and 4 Reed Buntings moved south through the bushes. A single Redpoll appeared through the gloom followed much later by a group of 3 as the sun came out. Meagre pickings from what would have been a really good day, without the fog that is.
 
male Reed Bunting (Emberiza schoeniclus)
 
Ringing totals:
Grey Wagtail 1
Lesser Redpoll 2
Blue Tit 2
Long-tailed Tit 2
Song Thrush 1
Blackbird 1
Wren 1
Goldcrest 1
Coal Tit 1
Reed Bunting 1
Robin 1
Total 14