Ravensroost Meadows: Wednesday, 5th September 2018

We had a bit of a frustrating session in the meadow at Ravensroost this morning. This time last year we were catching 140 birds, including Swallows and House Martins. This year just 33 birds caught with no Hirundines.  We had a few flying around but nothing like the numbers previously. Here’s hoping that they are all still feeding third broods and delaying their departure that bit longer.  The team was geared up for the higher level of catch with Jonny, Ellie and David joining me for the session. The Wildlife Trust’s latest employee, Emmeline, also came along to see what it is all about.

With just 9 birds before 8:30 and none at all between 8:30 and 10:30.  Whilst we were looking at empty nets, I decided we would pack up if the next round was empty. So, 20 birds later we decided to leave them open for a bit longer. We didn’t catch many more so packed up at 11:30.

One of the birds caught at 10:30 was the first ever Whinchat caught and ringed at the Ravensroost complex.  I have had it confirmed that this is the first ever record of any sort for this species at the site. It was quite a surprise to find it there as it certainly doesn’t seem like typical Whinchat habitat, even on migration.

2018_09_05Whinc2

The list for the day was: Blue Tit 10; Great Tit 2(1); Wren 4; Whinchat 1; Robin 2; Blackcap 8; Whitethroat 2; Chiffchaff 1; Willow Warbler 2.  Totals: 32 birds ringed from 9 species and 1 bird recaptured. Of the birds caught 6 were adults: one each of the Great Tit, Robin and Willow Warbler; the Whinchat and 2 of the Blackcaps.

The Wrens were interesting: two of them were in full juvenile plumage with no indication of their having started their post-juvenile moult. These are quite late for second broods. The first fully juvenile Wrens caught were caught mid-June in the neighbouring Ravensroost Wood.  BTO Bird Facts credits them with having 2 broods per year: from egg laying to fledging is about 5 weeks. Excitingly, doing the maths, it is entirely possible that these youngsters are third brood birds: further investigation required! I have asked the ringing community if they have any hard evidence of third broods in Wrens.

Lower Moor Farm: CES 12, Saturday, 1st September 2018, + Summary

Saturday marked the end of the fourth year of the constant effort site at Lower Moor Farm. The point of the CES scheme is, by putting the nets in the same place, for the same length of time, year on year, standardising the variables, you can trace trends in the bird population at the site, being relatively confident that changes in the population are just that and not down to moving the nets to better positions.

Saturday’s session was quieter than the same session last year, which was a bit unfortunate given that we had a large team out.  Jonny, Ellie, Steph and I were joined by Tim, one of the Wildlife Trust’s Estate Management Team, coming along for a taster session.

The list for the day was as follows: Treecreeper 1; Blue Tit 1; Wren 1(1); Dunnock (3); Robin (5); Blackbird 2; Reed Warbler 2; Blackcap 11(1); Chiffchaff 5(1); Willow Warbler 1; Goldcrest 1; Bullfinch (1).  Totals: 25 birds ringed from 9 species, 12 birds recaptured from 6 species, making 37 birds processed from 12 species.

Over the last four years we have seen a steady reduction in the number of birds caught:

LMF1

The change is mainly due to a significant fall in the number of birds ringed between 2015 and 2016, remaining relatively stable in 2017 but falling away a lot more in 2018.  In 2018, the number of retrapped birds has fallen compared to the previous three years.  The number of species ringed and recaptured have remained relatively constant:

LMF3

The nets are set in the following positions:

Lower Moor rides close up

When I looked further at the data, it is clear that the main issue revolves around one set of nets:

LMF2

Ride 2 has shown a steady reduction in numbers caught over the period.  This ride has been subjected to several management procedures over the last couple of years: thinning of the trees to the side of the path away from the brook, development of scallops, top encourage butterflies on the brook side, and removal of significant amounts of bramble from that area as a result.  It will be interesting to see whether, as these procedures mature, the catch returns to its previous level.  The numbers were falling before these changes were made, however, and the same changes have been made to ride 3, which has not shown such a dramatic, nor continual, reduction.

Somerford Common and Ravensroost Woods: 27th and 29th August 2018

Having missed last Wednesday’s session at Somerford Common, due to rain and wind, Steph, Andrew and I met up there at 5:30 on Monday morning. We set a few lures away, hoping for some migrants coming through. Unfortunately, none of them managed to draw in the target species.  We had a reasonable catch of 35 birds, made up as follows: Blue Tit 6(1); Great Tit 2(1); Coal Tit 2; Long-tailed Tit 1(2); Wren 2; Dunnock 1; Robin 3; Blackcap 5; Chiffchaff 8; Willow Warbler 1. Totals: 31 birds ringed from 10 species; 4 birds recaptured from 3 species, making 35 birds processed from 10 species.  Of the birds caught, 27 were juvenile birds. The adults were 1 each of Coal Tit, Great Tit and Chiffchaff, 2 Long-tailed Tits and 3 Blue Tits.

We have seen an interesting phenomenon recently: catches have been reasonably steady from when we open the nets until 10:00 in the morning, and then it drops off dramatically to virtually zero. Our last four sessions have been the same in this respect so when we arrived at Ravensroost Woods for the August project session we did wonder what would happen.  I was joined by Jonny and Andrew for the session.

We set our nets along the usual rides and started catching straight away. The catch was regular until 8:30 and then dropped off dramatically. We spent the next hour visiting empty nets – and then it got interesting. Firstly, there have been reports of Spotted Flycatcher in the wood for several years now.  We have all seen them.  A family group was seen earlier this week in the vicinity of the meadow pond. However, before today none had been caught. This now means that they have been caught in four of the five woods that we monitor in the Braydon Forest.  We are hopeful that there is a small breeding population in the Forest: a family group has also been seen in the Firs this summer.

2018_08_29sspofl

In addition, we had a decent fall of Chiffchaff in the same net.  They have been a bit scarce over the last couple of years, compared with the previous three years, but numbers seem to be picking up again.

The list for the day was: Nuthatch 3(3); Treecreeper 1; Blue Tit 6; Great Tit 2; Marsh Tit 1; Wren 1; Spotted Flycatcher 1; Robin 4(2); Blackbird (1); Blackcap 11; Chiffchaff 13(2).  Totals: 43 birds ringed from 10 species; 8 birds recaptured from 4 species, making 35 birds processed from 11 species.  Of the birds caught, 37 were definitely fledged this year; 8 were definitely adult and 6 (the Nuthatches) were impossible to age as either fledgling or adult as both undergo a full moult into adult plumage in the summer / early autumn.  This catch compares well with the equivalent session last year (30 birds from 10 species): adding to the trend of matching or bettering the previous year’s catch this late summer / autumn.

As well as the Spotted Flycatcher and the Chiffchaff numbers, it was a relief to catch another Marsh Tit.  Things are moving a bit slowly for this species this year, so we will be focusing our efforts on trying to improve the numbers caught between now and the end of December.

About 10:00 a volunteer team came along to work on the Shooters’ Hut in the middle of the wood. It has been vandalised frequently over the years. They have done a lovely job of repairing it: it looks smashing and it incorporates an owl box.  Let’s hope the vandals leave it alone and the owls don’t!

At 10:30 we were surprised to find a large group of people brandishing pitchforks and scythes come down the main path towards us! Fortunately, our not having recently cobbled together and reanimated a being from parts garnered from various cadavers, they were friendly.  It was a work party come to cut the verges of the path.  I love the fact that the Trust is now able to eschew the tractor and flail mower they used to contract with, to cut back the vegetation along the paths, with the messy and ragged result that used to leave, and have this skilled volunteer workforce to carry out this much better, economic and eco-friendly maintenance.  As they were carrying out their task one of the crew scythed apart a stand of vegetation to reveal what was either a Blackcap or Garden Warbler nest. The key thing about this is that the nest was less than 18″ from the path and a similar distance off the ground. This is why dogs must be kept on leads and not allowed to roam off the path during the breeding season.  These nests are so vulnerable to even the most friendly and well-meaning dog.  (Of course, the Trust rule is that should be the case all year round. Unfortunately, it is regularly ignored by those “responsible” dog owners.)

The catch fell away at 11:30 and we packed up and left site at about 12:30 – leaving the scything crew to carry on their good work.

New Zealand Farm: Saturday, 25th August 2018

Ian and Andy had a very early start, hoping to catch any migrating Nightjar that might be in the area.  They were unlucky but Steph and I were particularly lucky because by the time we arrived at 6:00 virtually all of the nets were already set up and ready to go.

We were not as lucky as on our last visit. Unfortunately, it was quite breezy, which did limit the number of nets that could be set to the more sheltered parts. Shelter and Salisbury Plain do not really go together.  The morning was quite cold and even the rising sun did not particularly warm the place up.  However, it did make some of the nets extremely visible.  We tried a simple two shelf net by the only water in the immediate area: a not too big puddle.  This usually works as a magnet for birds looking for a drink or a wash – but not on this occasion.

The catch for the day was: Blue Tit 1; Tree Pipit 1; Wren 1(1);  Dunnock 2; Robin 2; Song Thrush 2; Blackbird 1; Blackcap 4; Whitethroat 8.  Totals 22 birds ringed from 9 species plus 1 recapture.  All birds were juvenile except one each of the Wren, Whitethroat and Song Thrush.

The star bird of the session was the Tree Pipit:

2018_08_25trepi

The number of birds fell of dramatically very quickly and by 10:00 we were just watching empty nets. At 11:00 we gave it up as a bad job and took the nets down.

Wild Camping, “Instagrammers” and Bird Ringing

This weekend saw the penultimate CES session for the year.  One of the more sensible things I decided upon when I set up my CES was to limit the number of nets to what I thought I would be able to manage alone when I am older and even more decrepit, and cannot necessarily rely on my team to turn up to the session for whatever reason. Yesterday, nearly all of those things came to pass, with one crying off on the morning with a cold and Steph turning up after I had set the nets (okay, that was by arrangement, maternal duties take precedence).

The weather was actually (relatively) cold, with very light occasional showers for the first two hours.  This meant there was very little insect activity, and the initial rounds only produced a couple of birds at a time.  As the weather warmed up, so the catches improved.

We knew that the Wildlife Trust were trialling a “wild camping” weekend at Lower Moor Farm and that we would have some visitors. Having woken a few of them between 4:30 and 5:30 when banging in pegs and making holes for the poles, there were visitors from minute one.  These were mainly Trust employees, and it was really good to give them the chance to get close to some of the birds that frequent their northern flagship reserve.

What we didn’t expect was 20+ photographers to turn up at 10:30.  Possibly worse: they were a self-styled group of “Instagrammers”.  There are clear rules laid down by the BTO for using social media as, great tool though it is, it is probably better at spreading negative messages than positive ones.  As there was no point in trying to stop them taking photographs, and even less chance of stopping them from posting them on Instagram, I asked them to avoid posting shots that included Steph’s or my face (no hardship in cropping out my ugly mug).  Also, I asked them not to publish any photos of the birds in positions that might look as though they were uncomfortable, as those present would be aware that the birds were fine, whereas others looking at the photos might not.  It is also true that there is a significant clique on the internet who use poor ringing photographs to spread disinformation about the practice (or even just photos of ringers smiling whilst holding birds, as though enjoyment somehow invalidates the value of ringing. Something has to compensate for the early starts and the ever increasing cost.).

The group all agreed and, to be fair, were very interested in what was going on and delighted to see some species that they had not seen up close before. You know a session has gone reasonably well when people make a point of coming up to you some time afterwards to say how much they enjoyed it and how much they had learnt.

Steph and I also enjoyed it, we caught three Sedge Warblers in the session.  We have never previously caught more than two in one session.

2018_08_18sedwa

(Photo courtesy of Steph.)

The list for the day was: Blue Tit 7(3); Long-tailed Tit 3(1); Wren (1); Dunnock 1; Robin 3; Blackbird 1; Reed Warbler 1; Sedge Warbler 3; Blackcap 15(1); Garden Warbler 9; Whitethroat 2; Lesser Whitethroat 1; Chiffchaff 6(2); Willow Warbler 3; Bullfinch 1.  Totals: 56 birds ringed from 14 species; 8 birds recaptured from 5 species, making 64 birds processed from 15 species.  58 of the birds caught were definitely fledged this year, 2 of the Long-tailed Tits probably were, but it is difficult to be certain about that at this time of year.  Both adults and fledglings moult into full adult plumage by the autumn.  I made the assessment on the colouration of the eye-ring (generally, red in juveniles, orange in adults) but have been circumspect in entering the details into the national database.

Garden Warbler numbers continue to surprise, with our best ever Quarter 3 so far, with a total of 31 ringed and 3 recaptured.  The overall catch was slightly down on the equivalent session last year, which had a total of 72 birds from the same number of species: the difference being fewer recaptured birds (16 from 8 species, opposed to this year’s 8 from 5) but we ringed 2 more birds this year.  There were key differences in the composition of the catch: Blue Tit and Chiffchaff numbers were less than half of last year’s session; whereas, unsurprisingly given what I stated above, Garden Warbler numbers are significantly improved (9 to 1) and we had no Sedge Warblers at this time in 2017.

Steph and I closed the nets and packed up at 11:30 after a thoroughly satisfying session.

 

 

 

Tedworth House: Wednesday, 15th August 2018

Today was probably the smallest catch that I have blogged about, with only 9 birds caught, but it was a good session for all that.  Dave Turner turned up to help as usual, only I was also joined today by Gemma Louise, Sarah, Ellie and Rowan from Sparsholt College’s animal handling team.  Many thanks to them for their help and enthusiasm – despite the small catch.  From the first bird: a retrapped Wren, to the last: a Woodpigeon, they were good company, interested and keen to take part.  They are now looking to arrange a ringing demonstration at the college.

We caught another juvenile Great Spotted Woodpecker, our third in a week, in the second net round but the star bird arrived in the third round: the first Whitethroat caught at Tedworth House. It was a juvenile bird, no doubt making its way south from having fledged on Salisbury Plain:

2018_08_15 White

The last bird caught today was a Woodpigeon.  I am always a bit ambivalent about ringing Woodpigeons, given their propensity to end up as a starter in restaurants / gastro-pubs but, as with any other bird, I think that if I have inconvenienced it, no matter how trivially, by catching it, the least I can do is process the bird.  So I ringed it.  I ring few birds that take an F-size ring, so it is good practice for ringing other birds that take larger rings.

2018_08_15 Woodp

The list for the session was: Woodpigeon 1; Great Spotted Woodpecker 1; Blue Tit 1; Wren (1); Robin 3; Blackcap 1; Whitethroat 1.  Totals: 8 birds ringed from 6 species; 1 bird recaptured, making 9 birds processed from 7 species.  All birds, except the Woodpigeon, were juveniles.

This funny little site, gradually being opened up and improved for wildlife, has now delivered 36 species, including some real stunners (Firecrest, Black Redstart) and birds you don’t find being caught in mist nets and ringed very often (Mallard, Kestrel, Sparrowhawk, Mistle Thrush).  If the promised delivery of a wildlife pond, and the opening up of a new ride in the wood, happen this winter we can look forward to, hopefully, broaching the 40 species mark next year.

Red Lodge: Saturday, 11th August 2018

Red Lodge, like Webb’s Wood, has always been one of those sites where the catches were large when the feeding station was operational and the winter flocks were around, but quiet during the rest of the year.   However, Red Lodge has really picked up since the thinning operations that, ironically, reduced the catch in 2015.  It is probably something to do with additional under-storey that has developed as a result of the thinning.

On Saturday I was joined by Jonny, David, Steph and Lillie and we set exactly the same amount of net as we did at Webb’s Wood last Saturday.  We didn’t quite get to the 100 birds, but 80 is a good haul for this site.  It was an interesting catch: the vast majority were juvenile birds – 66 of them, including two young Great Spotted Woodpeckers:

2018_08_11grswo

 You can tell this is a juvenile because of the red cap.  They lose this during post-fledging moult and the female retains an all black cap and the male develops a red patch at the back of the head / top of the neck. The Nuthatch could not be aged: both juveniles and adults undergo a full moult into adult plumage post- breeding / fledging and this one had just about completed its moult.

The list for the day was: Great Spotted Woodpecker 2; Nuthatch 1; Treecreeper 1; Blue Tit 20(1); Great Tit 22(2); Coal Tit 1; Marsh Tit 3(2); Wren 6(1); Dunnock 1; Robin 6; Song Thrush 2; Blackcap 5; Chiffchaff 2; Willow Warbler 2.  Totals: 74 birds ringed from 14 species and 6 birds recaptured from 4 species, making 80 birds processed from 14 species. The 6 recaptured birds were all adults, as was one each of the Great and Marsh Tits and Robin, plus two each of the Blackcaps and the Song Thrushes.

On top of the 6 Marsh Tits ringed at Webb’s Wood last weekend, we ringed another 3 this weekend at Red Lodge: 2 juveniles and 1 adult.  Hopefully this heralds a glut of the species this autumn and winter.